text:
but was decreased in those reporting Baptist, Methodist, or Orthodox religion, in those who reported weekly church attendance, and in university-educated males. After allowing for the effects of sociodemographic and psychiatric predictors, 47 % (95% CI 28-55) of the residual variance in alcoholism risk was attributable to additive genetic effects, 0% (95% CI 0-14) to shared environmental factors, and 53% (95% CI 45-63) to nonshared environmental influences. CONCLUSIONS: Controlling for other risk factors, substantial residual heritability of AD was observed, suggesting that psychiatric and other risk factors play a minor role in the inheritance of AD.},
affiliation = {Missouri Alcoholism Research Center, Department of Psychiatry, Washington University School of Medicine, St Louis, MO 63108, USA. vsknopik@matlock.wustl.edu},
number = {8},
pages = {1519--30},
volume = {34},
year = {2004},
month = {Nov},
language = {eng},
keywords = {Anxiety Disorders, Regression Analysis, Humans, Male, Australia, Mental Disorders, Adult, Female, Depression, Child Abuse: Sexual, Child, Suicide: Attempted, Risk Factors, Alcoholism},
date-added = {2010-01-07 11:39:51 +0100},
date-modified = {2010-01-07 11:39:51 +0100},
pmid = {15724882},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p1346},
rating = {0}
}

@article{Grove:2006p13814,
author = {William M Grove and Martin Lloyd},
journal = {J Abnorm Psychol},
title = {Meehl's contribution to clinical versus statistical prediction},
abstract = {Paul E. Meehl's work on the clinical versus statistical prediction controversy is reviewed. His contributions included the following: putting the controversy center stage in applied psychology; clarifying concepts underpinning the debate (especially his crucial distinction between ways of gathering data and ways of combining them) as well as establishing that the controversy was real and not concocted, analyzing clinical inference from both theoretical and probabilistic points of view, and reviewing studies that compared the accuracy of these 2 methods of data combination. Meehl's (1954/1996) conclusion that statistical prediction consistently outperforms clinical judgment has stood up extremely well for half a century. His conceptual analyses have not been significantly improved since he published them in the 1950s and 1960s. His work in this area contains several citation classics, which are part of the working knowledge of all competent applied psychologists today.},
affiliation = {Department of Psychology, University of Minnesota-Twin Cities, Minneapolis, MN 55455-0344, USA. grove001@umn.edu},
number = {2},
pages = {192--4},
volume = {115},
year = {2006},
month = {May},
language = {eng},
keywords = {History: 21st Century, Statistics as Topic, Humans, Psychology, History: 20th Century, Famous Persons, United States},
date-added = {2010-07-29 12:37:49 +0200},
date-modified = {2010-07-29 12:37:49 +0200},
doi = {10.1037/0021-843X.115.2.192},
pii = {2006-06737-002},
pmid = {16737380},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Grove-2006-J%20Abnorm%20Psychol_Meehl's%20contribution.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p13814},
rating = {0}
}

@article{Sadatsafavi:2010p6516,
author = {Mohsen Sadatsafavi and Neal Shahidi and Fawziah Marra and Mark J Fitzgerald and Kevin R Elwood and Na Guo and Carlo A Marra},
journal = {Journal of Clinical Epidemiology},
title = {A statistical method was used for the meta-analysis of tests for latent TB in the absence of a gold standard, combining random-effect and latent-class methods to estimate test accuracy},
abstract = {OBJECTIVE: Because of the lack of a gold standard, the diagnostic performance of tests for the detection of latent tuberculosis infection (LTBI) is not known. However, statistical methods can be used to estimate the accuracy from the studies reporting the concordance among the tests. STUDY DESIGN AND SETTING: We developed a random-effect latent-class model to estimate performance characteristics of three LTBI diagnostic tests: tuberculin skin test (TST, at 10-mm cutoff), QuantiFERON-TB gold (QFG), and TSPOT-TB from the studies evaluating agreement among the tests. RESULTS: Nineteen studies were included. QFG had a sensitivity of 0.642 (95% confidence interval [CI]: 0.593-0.691) and specificity of 0.996 (95% CI: 0.989-1.000), TSPOT-TB had a sensitivity of 0.500 (95% CI: 0.334-0.666) and specificity of 0.906 (95% CI: 0.882-0.929), and TST had a sensitivity of 0.709 (95% CI: 0.658-0.761) and specificity of 0.683 (95% CI: 0.522-0.844). Results were not sensitive to the inclusion of any single study. When only the three studies that reported on TSPOT were removed, estimates for the other two tests varied minimally. CONCLUSIONS: Statistical methods can help estimate the accuracy of LTBI tests. Although the specificities were close to their reported values in the literature, the estimates for sensitivities were low; a finding that should be carefully evaluated.},
affiliation = {Faculty of Pharmaceutical Sciences, Collaboration for Outcomes Research and Evaluation, University of British Columbia, Vancouver, British Columbia, Canada.},
number = {3},
pages = {257--269},
volume = {63},
year = {2010},
month = {Mar},
language = {ENG},
date-added = {2010-02-23 08:40:25 +0100},
date-modified = {2010-02-23 08:40:25 +0100},
doi = {10.1016/j.jclinepi.2009.04.008},
pii = {S0895-4356(09)00129-2},
pmid = {19692208},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Sadatsafavi-2010-Journal%20of%20Clinical%20Epidemiology_A%20statistical%20method-1.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p6516},
rating = {0}
}

@article{Collin:2009p5484,
author = {V Terri Collin and Claudio Violato and Kent Hecker},
journal = {Adv Health Sci Educ Theory Pract},
title = {Aptitude, achievement and competence in medicine: a latent variable path model},
abstract = {To develop and test a latent variable path model of general achievement, aptitude for medicine and competence in medicine employing data from the Medical College Admission Test (MCAT), pre-medical undergraduate grade point average (UGPA) and demographic characteristics for competence in pre-clinical and measures of competence (United States Licensure Examination {USMLE} Steps 1, 2, and 3). Data were gathered on 839,710 participants from 1991 to 2000 on demographic and school variables, UGPA, MCAT subtest scores and Steps 1, 2, and 3 of the United Stated Licensure Examination (USMLE). However, subsets of the total 839,710 participants included in the database were used for various analyses and the testing of a latent variable path model (LVPA). A number of preliminary descriptive and inferential techniques were used to confirm previous hypotheses and stated relationships amongst the variables of interest to the present study. Through development and testing of a latent variable path model, three latent variables measured by UGPA (general achievement), subscales of the MCAT (aptitude for medicine), and Steps 1, 2, and 3 of the USMLE (competence in medicine) were identified which resulted in a comparative fit index = .932 of the model to a large sample (n = 20,714). In a confirmatory latent variable path model we were able to identify theoretical constructs, aptitude for medicine, general achievement, and competence in medicine and their interrelationships. These are distinct but interrelated latent variables.},
affiliation = {Department of Surgery, University of Pittsburgh Medical Center, 200 Lothrop St. Room F677PUH, Pittsburgh, PA 15213, USA. collinvl@upmc.edu},
number = {3},
pages = {355--66},
volume = {14},
year = {2009},
month = {Aug},
language = {eng},
keywords = {Male, Young Adult, Models: Theoretical, Education: Medical, Female, Clinical Competence, Humans, Educational Status, Adult},
date-added = {2010-02-12 14:43:46 +0100},
date-modified = {2010-02-12 14:43:46 +0100},
doi = {10.1007/s10459-008-9121-7},
pmid = {18481186},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p5484},
rating = {0}
}

@article{Caspi:2005p10002,
author = {Avshalom Caspi and Brent W Roberts and Rebecca L Shiner},
journal = {Annual Review of Psychology},
title = {Personality development: stability and change},
abstract = {In this review, we evaluate four topics in the study of personality development where discernible progress has been made since 1995 (the last time the area of personality development was reviewed in this series). We (a) evaluate research about the structure of personality in childhood and in adulthood, with special attention to possible developmental changes in the lower-order components of broad traits; (b) summarize new directions in behavioral genetic studies of personality; (c) synthesize evidence from longitudinal studies to pinpoint where and when in the life course personality change is most likely to occur; and (d) document which personality traits influence social relationships, status attainment, and health, and the mechanisms by which these personality effects come about. In each of these four areas, we note gaps and identify priorities for further research.},
affiliation = {Social, Genetic and Developmental Psychiatry Research Center, Institute of Psychiatry, King's College London, London, England SE5 8AF, UK. a.caspi@iop.kcl.ac.uk},
pages = {453--84},
volume = {56},
year = {2005},
month = {Jan},
language = {eng},
keywords = {Adult, Parenting, Cognition, Humans, Environment, Child, Social Behavior, Genetics: Behavioral, Mood Disorders, Affect, Neurotic Disorders, Intelligence, Personality Development},
date-added = {2010-03-31 19:47:32 +0200},
date-modified = {2010-03-31 19:47:32 +0200},
doi = {10.1146/annurev.psych.55.090902.141913},
pmid = {15709943},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Caspi-2005-Annual%20Review%20of%20Psychology_Personality%20developm.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p10002},
rating = {0}
}

@article{Mikoajczyk:2010p8900,
author = {Elzbieta Miko{\l}ajczyk and Anna Grzywacz and Jerzy Samochowiec},
journal = {Brain Res},
title = {The association of catechol-O-methyltransferase genotype with the phenotype of women with eating disorders},
abstract = {OBJECTIVE: The modern brain imaging studies in patients with eating disorders have shown that neurotransmitting regulation differs distinctly from control groups. These disturbances have involved serotonin and dopamine system can be inherited and conditioned by genes. The aim of this work has been the analysis of association between eating disorders of anorexia or bulimia type and two polymorphisms of COMT gene. The additional goal has been the analysis of correlation among chosen personality and psychological features of ED women with the research gene variations. METHODS: The group taken as research sample consisted of adult 103 women (mean age=22.45+/-3.8 years) suffered from serious ED with illness lasting minimum 12 months. According to ICD-10 criteria, 61 women were diagnosed as anorexia nervosa while as 42 bulimia nervosa. The control group consisted of 108 ethnically and age-matched women with excluded major psychiatric disorders. The study groups were filling up the Eating Disorders Inventory and the Temperament and Character Inventory. The genotype of catechol-O-methyltransferase in two polymorphisms rs4633 (his102his) and rs4680 (val158met) was determined. RESULTS: The joined GGCT genotype increased the risk of having ED over fivefold and over sevenfold the risk of having bulimia. Also haplotype CT was found three times more often in ED women than in controls. Besides the homozygous genotypes, AACC and GGCC reduced substantially the relative risk of ED. The patients with the low activity COMT genotype scored higher in EDI scales ineffectiveness, drive for thinness and perfectionism. The high activity genotype was connected with underdeveloped features of character marked in the poor cooperativeness and the poor self-directedness. These connections among genotypes and character scales were more expressed in bulimia group.},
affiliation = {Department of Psychiatry, Pomeranian Medical University, Broniewskiego 26; 71-460, Szczecin, Poland.},
pages = {142--8},
volume = {1307},
year = {2010},
month = {Jan},
language = {eng},
keywords = {Humans, Phenotype, Young Adult, Genome-Wide Association Study, Adult, Catechol O-Methyltransferase, Bulimia Nervosa, Adolescent, Eating Disorders, Polymorphism: Genetic, Case-Control Studies, Personality Inventory, Anorexia Nervosa, Genotype, Odds Ratio, Statistics: Nonparametric, Female, Genetic Predisposition to Disease},
date-added = {2010-03-22 12:51:35 +0100},
date-modified = {2010-03-22 12:51:36 +0100},
doi = {10.1016/j.brainres.2009.10.035},
pii = {S0006-8993(09)02213-6},
pmid = {19852950},
URL = {http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6SYR-4XH5MMM-3&_user=2432700&_coverDate=01%252F11%252F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000057263&_version=1&_urlVersion=0&_userid=2432700&md5=c82d29a3a755e52d9ba6a6e348333bcc},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Miko%C5%82ajczyk-2010-Brain%20Res_The%20association%20of%20c.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p8900},
rating = {0}
}

@techreport{Brysbaert:2007,
author = {M Brysbaert},
journal = {Techreport},
title = {``The language-as-fixed-effect fallacy'': Some simple SPSS solutions to a complex problem},
affiliation = {RTN-LAB},
year = {2007},
date-added = {2010-01-10 11:33:09 +0100},
date-modified = {2010-01-10 11:33:25 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Brysbaert-2007-Techreport_%60%60The%20language-as-fi.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2133},
rating = {0}
}

@article{Pedersen:2006p7242,
author = {Susanne S Pedersen and Johan Denollet and Helle Spindler and Andrew T L Ong and Patrick W Serruys and Ruud A M Erdman and Ron T van Domburg},
journal = {J Psychosom Res},
title = {Anxiety enhances the detrimental effect of depressive symptoms on health status following percutaneous coronary intervention},
abstract = {OBJECTIVE: We examined whether anxiety has incremental value to depressive symptoms in predicting health status in patients undergoing percutaneous coronary intervention (PCI) treated in the drug-eluting stent era. METHODS: A series of consecutive patients (n=692) undergoing PCI as part of the Rapamycin-Eluting Stent Evaluated at Rotterdam Cardiology Hospital registry completed the Hospital Anxiety and Depression Scale at 6 months and the Short-Form Health Survey (SF-36) at 6 and 12 months post-PCI. RESULTS: Of 692 patients, 471 (68.1%) had no symptoms of anxiety nor depression, 62 (9.0%) had anxiety only, 59 (8.5%) had depressive symptoms only, and 100 (14.5%) had co-occurring symptoms. There was an overall significant improvement in health status between 6 and 12 months post-PCI (P<.001); the interaction effect for time by psychological symptoms was also significant (P=.003). Generally, patients with co-occurring symptoms reported significantly poorer health status compared with the other three groups (Ps <.001). Patients with co-occurring symptomatology were also at greater risk of impaired health status on six of the eight subdomains of the SF-36 compared with the other three symptom groups, adjusting for baseline characteristics and health status at 6 months. CONCLUSION: Patients with co-occurring symptoms of anxiety and depression reported poorer health status compared with anxious or depressed-only patients and no-symptom patients, showing that anxiety has incremental value to depressive symptoms in identifying PCI patients at risk for impaired health status treated in the drug-eluting stent era.},
affiliation = {Department of Cardiology, Thoraxcentre, Erasmus Medical Centre Rotterdam, The Netherlands. s.s.pedersen@uvt.nl},
number = {6},
pages = {783--9},
volume = {61},
year = {2006},
month = {Dec},
language = {eng},
keywords = {Emotions, Angioplasty: Transluminal: Percutaneous Coronary, Follow-Up Studies, Mental Health, Time Factors, Stents, Female, Health Status, Adult, Humans, Depressive Disorder, Comorbidity, Male, Disease Progression, Middle Aged, Coronary Disease, Anxiety},
date-added = {2010-03-10 20:12:05 +0100},
date-modified = {2010-07-29 19:36:02 +0200},
doi = {10.1016/j.jpsychores.2006.06.009},
pii = {S0022-3999(06)00337-0},
pmid = {17141666},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Pedersen-2006-J%20Psychosom%20Res_Anxiety%20enhances%20the.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p7242},
rating = {0}
}

@misc{Maas:1993,
author = {W J Maas and Jan de Leeuw},
journal = {Miscellaneous},
title = {Some Generalizations of Correspondence Analysis},
abstract = {Correspondence analysis of a bivariate table has many different optimality properties. For instance, the scores computed by correspondence analysis linearize both regressions, and maximize the correlation coefficient. We try to generalize both properties to the multivariate situation, using the concept of maximizing any aspect of the correlation matrix, and the concept of simultaneously linearizing all bivariate regressions. 1. Introduction Correspondence Analysis (CA) is a technique which has been reinvented many times, in many countries, and in many disciplines. Historical reviews are, for instance, in Nishisato [34], Tenenhaus and Young [38], Gifi [20], De Leeuw [12], and Benz'ecri [2]. Some of the reasons for the multiple discovery phenomenon are implicit in our first sentence. Until quite recently there was not much communication between countries, and almost no communication between disciplines. There is another reason, however, which is more interesting from a scientific point ...},
year = {1993},
date-added = {2010-01-03 19:38:21 +0100},
date-modified = {2010-07-29 20:45:39 +0200},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p1183},
read = {Yes},
rating = {0}
}

@article{Scheines:1999p6296,
author = {R Scheines and H Hoijtink and A Boomsma},
journal = {Psychometrika},
title = {BAYESIAN ESTIMATION AND TESTING OF STRUCTURAL EQUATION MODELS},
abstract = {The Gibbs sampler can be used to obtain samples of arbitrary size from the posterior distribution over the parameters of a structural equation model (SEM) given covariance data and a prior distribution over the parameters. Point estimates, standard deviations and interval estimates for the parameters can be computed from these samples. If the prior distribution over the parameters is uninformative, the posterior is proportional to the likelihood, and asymptotically the inferences based on the Gibbs sample are the same as those based on the maximum likelihood solution, for example, output from LISREL or EQS. In small samples, however, the likelihood surface is not Gaussian and in some cases contains local maxima. Nev- ertheless, the Gibbs sample comes from the correct posterior distribution over the parameters regardless of the sample size and the shape of the likelihood surface. With an informative prior distribution over the parameters, the posterior can be used to make inferences about the parameters of underidentified models, as we illustrate on a simple errors-in-variables model.},
number = {1},
pages = {37--52},
volume = {64},
year = {1999},
date-added = {2010-02-20 20:08:13 +0100},
date-modified = {2010-02-20 20:09:17 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Scheines-1999-Psychometrika_BAYESIAN%20ESTIMATION.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p6296},
rating = {0}
}

@article{Joyner:2009p8833,
author = {Alexander H Joyner and Cooper Roddey J and Cinnamon S Bloss and Trygve E Bakken and Lars M Rimol and Ingrid Melle and Ingrid Agartz and Srdjan Djurovic and Eric J Topol and Nicholas J Schork and Ole A Andreassen and Anders M Dale},
journal = {Proc Natl Acad Sci USA},
title = {A common MECP2 haplotype associates with reduced cortical surface area in humans in two independent populations},
abstract = {The gene MECP2 is a well-known determinant of brain structure. Mutations in the MECP2 protein cause microencephalopathy and are associated with several neurodevelopmental disorders that affect both brain morphology and cognition. Although mutations in MECP2 result in severe neurological phenotypes, the effect of common variation in this genetic region is unknown. We find that common sequence variations in a region in and around MECP2 show association with structural brain size measures in 2 independent cohorts, a discovery sample from the Thematic Organized Psychosis research group, and a replication sample from the Alzheimer's Disease Neuroimaging Initiative. The most statistically significant replicated association (P < 0.025 in both cohorts) involved the minor allele of SNP rs2239464 with reduced cortical surface area, and the finding was specific to male gender in both populations. Variations in the MECP2 region were associated with cortical surface area but not cortical thickness. Secondary analysis showed that this allele was also associated with reduced surface area in specific cortical regions (cuneus, fusiform gyrus, pars triangularis) in both populations.},
affiliation = {Scripps Translational Science Institute, 3344 North Torrey Pines Court, La Jolla, CA 92037, USA.},
number = {36},
pages = {15483--8},
volume = {106},
year = {2009},
month = {Sep},
language = {eng},
keywords = {Humans, Magnetic Resonance Imaging, Polymorphism: Single Nucleotide, Cerebral Cortex, Methyl-CpG-Binding Protein 2, Linkage Disequilibrium, Linear Models, Haplotypes, Genotype, Male, Sex Factors},
date-added = {2010-03-22 12:34:12 +0100},
date-modified = {2010-03-22 12:34:13 +0100},
doi = {10.1073/pnas.0901866106},
pii = {0901866106},
pmid = {19717458},
URL = {http://www.pnas.org/content/106/36/15483.long},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Joyner-2009-Proc%20Natl%20Acad%20Sci%20USA_A%20common%20MECP2%20haplo.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p8833},
rating = {0}
}

@article{Compton:2009p3078,
author = {Michael T Compton and Victoria H Chien and Annie M Bollini},
journal = {Psychiatr Q},
title = {Associations between past alcohol, cannabis, and cocaine use and current schizotypy among first-degree relatives of patients with schizophrenia and non-psychiatric controls},
abstract = {Associations between past use of alcohol, cannabis, and cocaine and various domains of schizotypy were examined in first-degree relatives of patients with schizophrenia and non-psychiatric controls. Substance use was operationalized in three ways: (1) having ever used the substance, (2) age at first use, and (3) past frequency/amount of use during three time periods in late adolescence/early adulthood. Schizotypy was assessed using the Schizotypal Personality Questionnaire (SPQ). Participants who had ever used cannabis had significantly higher cognitive-perceptual, interpersonal, and total schizotypy scores compared to those who had not. Younger age of alcohol use onset was associated with more schizotypy in adulthood, and younger age of first cannabis use was related to more interpersonal schizotypy. More frequent/heavier use of alcohol in the 25-29 age-range, and cannabis in early adulthood, were associated with more schizotypy. The use of addictive substances, particularly cannabis, is related to schizotypy in complex ways.},
affiliation = {Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, 30303, GA, USA Michael.Compton@emory.edu},
number = {3},
pages = {143--54},
volume = {80},
year = {2009},
month = {Sep},
language = {eng},
keywords = {Age of Onset, Humans, Schizophrenia, Case-Control Studies, Severity of Illness Index, Marijuana Smoking, Alcohol Drinking, Genetic Predisposition to Disease, Middle Aged, Psychiatric Status Rating Scales, Female, Aged, Adult, Schizophrenic Psychology, Cocaine-Related Disorders, Family, Schizotypal Personality Disorder, Male},
date-added = {2010-01-14 19:54:57 +0100},
date-modified = {2010-01-14 19:54:57 +0100},
doi = {10.1007/s11126-009-9102-x},
pmid = {19396546},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p3078},
rating = {0}
}

@article{Norman:2007p2662,
author = {Robert G Norman and Marc A Scott},
journal = {Stat Med},
title = {Measurement of inter-rater agreement for transient events using Monte Carlo sampled permutations},
abstract = {In this paper we demonstrate the adverse effect of serially observed data sequences containing transient events on the calculation of Cohen's kappa as an index of inter-rater agreement in the detection of these events. We develop and use a Monte-Carlo-based permutation technique to produce an empiric distribution of kappa in the presence of serial dependence. We find that the empiric confidence intervals for kappa tend to be wider than parametrically derived intervals and in the case of longer event lengths, are markedly so. We evaluate the effect of number and length of events, and further, describe and evaluate three permutation methods which match specific rating situations. Finally, we apply these techniques to the measurement of inter-rater agreement for sleep disordered breathing events, a transient event identified during nocturnal polysomnography, for which traditionally computed confidence intervals for kappa are incorrect.},
affiliation = {Division of Pulmonary and Critical Care Medicine, School of Medicine, New York University, NY 10016, USA. robert.norman@med.nyu.edu},
number = {4},
pages = {931--42},
volume = {26},
year = {2007},
month = {Feb},
language = {eng},
keywords = {Polysomnography, Monte Carlo Method, Humans, Observer Variation, Reproducibility of Results, Sleep Apnea Syndromes, Data Interpretation: Statistical},
date-added = {2010-01-12 22:55:12 +0100},
date-modified = {2010-01-12 22:55:12 +0100},
doi = {10.1002/sim.2568},
pmid = {16612834},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Norman-2007-Stat%20Med_Measurement%20of%20inter.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2662},
rating = {0}
}

@article{Walwyn:2010p13690,
author = {Rebecca Walwyn and Chris Roberts},
journal = {Stat Methods Med Res},
title = {Therapist variation within randomised trials of psychotherapy: implications for precision, internal and external validity},
abstract = {Nesting of patients within therapists in psychotherapy trials creates an additional level within the design. The multilevel nature of this design has implications for the precision, internal and external validity of estimates of the treatment effect. Prior to or during a trial, psychotherapies are allocated to therapists and therapists are assigned to patients such that the therapist becomes part of the causal pathway from the intervention to the patient. It is therefore important to consider not only the relationship between interventions and patients but also relationships between interventions and therapists and between therapists and patients. Research designs comparing the effects of therapeutic approaches, therapist characteristics and packages of the two can be unified by viewing therapists as an important source of variability within psychotherapy outcome studies. Methodological considerations arising from therapist variation will be discussed, drawing together and building upon the associated psychotherapy and statistical literatures. Parallels will also be made with related designs and methods of analysis.},
affiliation = {Biostatistics, Health Methodology Research Group, University of Manchester, UK.},
number = {3},
pages = {291--315},
volume = {19},
year = {2010},
month = {Jun},
language = {eng},
date-added = {2010-07-11 09:04:50 +0200},
date-modified = {2010-07-11 09:04:50 +0200},
doi = {10.1177/0962280209105017},
pii = {0962280209105017},
pmid = {19608603},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Walwyn-2010-Stat%20Methods%20Med%20Res_Therapist%20variation.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p13690},
rating = {0}
}

@article{Garcia-Perez:1999,
author = {M A Garcia-Perez},
journal = {Span J Psychol},
title = {Fitting Logistic IRTModels: Small Wonder},
number = {1},
pages = {74--94},
volume = {2},
year = {1999},
date-added = {2010-01-10 11:33:19 +0100},
date-modified = {2010-01-10 11:33:25 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Garcia-Perez-1999-The%20Spanish%20Journal%20of%20Psychology_Fitting%20Logistic%20IRT.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2111},
rating = {0}
}

@article{Statnikov:2008p2572,
author = {Alexander Statnikov and Lily Wang and Constantin F Aliferis},
journal = {BMC Bioinformatics},
title = {A comprehensive comparison of random forests and support vector machines for microarray-based cancer classification},
abstract = {BACKGROUND: Cancer diagnosis and clinical outcome prediction are among the most important emerging applications of gene expression microarray technology with several molecular signatures on their way toward clinical deployment. Use of the most accurate classification algorithms available for microarray gene expression data is a critical ingredient in order to develop the best possible molecular signatures for patient care. As suggested by a large body of literature to date, support vector machines can be considered "best of class" algorithms for classification of such data. Recent work, however, suggests that random forest classifiers may outperform support vector machines in this domain. RESULTS: In the present paper we identify methodological biases of prior work comparing random forests and support vector machines and conduct a new rigorous evaluation of the two algorithms that corrects these limitations. Our experiments use 22 diagnostic and prognostic datasets and show that support vector machines outperform random forests, often by a large margin. Our data also underlines the importance of sound research design in benchmarking and comparison of bioinformatics algorithms. CONCLUSION: We found that both on average and in the majority of microarray datasets, random forests are outperformed by support vector machines both in the settings when no gene selection is performed and when several popular gene selection methods are used.},
affiliation = {Department of Biomedical Informatics, Vanderbilt University, Nashville, TN, USA. alexander.statnikov@vanderbilt.edu},
pages = {319},
volume = {9},
year = {2008},
month = {Jan},
language = {eng},
keywords = {Tumor Markers: Biological, Random Allocation, Algorithms, Decision Trees, Gene Expression Profiling, Validation Studies as Topic, Artificial Intelligence, Computational Biology, Oligonucleotide Array Sequence Analysis, Databases: Genetic, Neoplasms, Pattern Recognition: Automated, Humans},
date-added = {2010-01-12 22:23:51 +0100},
date-modified = {2010-01-12 22:23:51 +0100},
doi = {10.1186/1471-2105-9-319},
pii = {1471-2105-9-319},
pmid = {18647401},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Statnikov-2008-BMC%20Bioinformatics_A%20comprehensive%20comp.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2572},
rating = {0}
}

@article{Weber:2009p4045,
author = {Gerhard-Wilhelm Weber and S{\"u}reyya Oz{\"o}{\u g}{\"u}r-Aky{\"u}z and Erik Kropat},
journal = {Birth Defects Res C Embryo Today},
title = {A review on data mining and continuous optimization applications in computational biology and medicine},
abstract = {An emerging research area in computational biology and biotechnology is devoted to mathematical modeling and prediction of gene-expression patterns; it nowadays requests mathematics to deeply understand its foundations. This article surveys data mining and machine learning methods for an analysis of complex systems in computational biology. It mathematically deepens recent advances in modeling and prediction by rigorously introducing the environment and aspects of errors and uncertainty into the genetic context within the framework of matrix and interval arithmetics. Given the data from DNA microarray experiments and environmental measurements, we extract nonlinear ordinary differential equations which contain parameters that are to be determined. This is done by a generalized Chebychev approximation and generalized semi-infinite optimization. Then, time-discretized dynamical systems are studied. By a combinatorial algorithm which constructs and follows polyhedra sequences, the region of parametric stability is detected. In addition, we analyze the topological landscape of gene-environment networks in terms of structural stability. As a second strategy, we will review recent model selection and kernel learning methods for binary classification which can be used to classify microarray data for cancerous cells or for discrimination of other kind of diseases. This review is practically motivated and theoretically elaborated; it is devoted to a contribution to better health care, progress in medicine, a better education, and more healthy living conditions.},
affiliation = {Institute of Applied Mathematics, Middle East Technical University, Ankara 06531, Turkey.},
number = {2},
pages = {165--81},
volume = {87},
year = {2009},
month = {Jun},
language = {eng},
keywords = {Data Interpretation: Statistical, Gene Expression Profiling, Gene Expression Regulation, Computational Biology, Oligonucleotide Array Sequence Analysis, Humans, Congenital Abnormalities, Gene Regulatory Networks, Fungal Proteins, Numerical Analysis: Computer-Assisted, Artificial Intelligence, Automatic Data Processing, Animals},
date-added = {2010-01-19 15:46:14 +0100},
date-modified = {2010-01-19 15:46:14 +0100},
doi = {10.1002/bdrc.20151},
pmid = {19530130},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p4045},
rating = {0}
}

@article{Bao:2010p4252,
author = {L Bao and E F Redish},
title = {Model Analysis: Assessing the Dynamics of Student Learning},
abstract = {In this paper we present a method of modeling and analysis that permits the extraction and quantitative display of detailed information about the effects of instruction on a class's knowledge. The method relies on a cognitive model of thinking and learning that represents student thinking in terms of patterns of association in long-term memory structures that we refer to as schemas or mental models. As shown by previous research, students frequently fail to recognize relevant conditions that lead to appropriate uses of their mental models and, as a result, can use multiple models inconsistently to treat problems that appear equivalent to an expert. Once the most common mental models have been determined via qualitative research, they can be mapped onto probing instruments such as a multiple-choice test. We have developed Model Analysis to analyze the results of these instruments that treats the student as if he/she were in a mixed state -- a state which, when probed with a set of scenarios under diverse contextual settings, gives the probability that the student will choose a particular mental model to analyze the scenario. We illustrate the use of our method by analyzing results from the Force Concept Inventory, a research-based multiple-choice instrument developed to probe student's conceptual understanding of Newtonian Mechanics in a physics class. Model Analysis allows one to use qualitative research results to provide a framework for analyzing and interpreting the meaning of students' incorrect responses on a well-designed research-based multiple-choice test. These results can then be used to guide instruction, either for an individual teacher or for developers of reform curricula.},
date-added = {2010-01-23 20:55:36 +0100},
date-modified = {2010-01-23 20:56:21 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Bao--_Model%20Analysis%20Asse.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p4252},
rating = {0}
}

@article{Hernandez:2003p11173,
author = {A Hernandez and V Gonzalez-Roma},
journal = {Psicothema},
title = {Evaluating the Multiple-Group Mean and Covariance Structure Analysis model for the detection of Differential Item Functioning in polytomous ordered items},
abstract = {We use simulated data to evaluate the adequacy of the Multiple-Group (MG) extension of the Confir- matory Factor Analysis (CFA) with Mean and Covariance Structure (MACS) model for the detection of d i f f er e n t i a l	i t em	f u n c t i o n i n g	( D IF )	i n	p o l y t o m o u s	g r a d ed	re s p o n s e	i t e m s .	T w o	f ac t o r s	a r e	v ar i e d	t o	g e - nerate the DIF conditions: type of DIF (uniform and non-uniform) and size of DIF (low, medium and high). For each condition, 100 samples (N= 800) are generated according to the Graded Response mo- del. Ten items with 5-response categories are considered,and only one item ismanipulated to show DIF. The data are analyzed by means of LISREL 8. Results show that the DIF detection procedure analyzed reasonably maintained control of its Type I error under non-uniform DIF conditions, but showed some d i f f i c u l t i e s	u n d e r	u n i f o r m - D IF	co n d i t i o n s .	Wi t h	re s p e ct	t o	p o w e r,	t h e	p r o ce d u r e	w a s	s a t i s f a ct o ry	f o r	d e - tecting medium and high uniform DIF, and lacked power for detecting non-uniform DIF.},
number = {2},
pages = {322--327},
volume = {15},
year = {2003},
date-added = {2010-04-25 21:20:05 +0200},
date-modified = {2010-07-29 19:45:05 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Hernandez-2003-Psicothema_Evaluating%20the%20Multi.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11173},
rating = {4}
}

@techreport{Christensen:2003,
author = {K B Christensen and M L Nielsen and L Smith-Hansen},
journal = {Techreport},
title = {Latent Covariates in Generalized Linear Models},
affiliation = {National Institute of Occupational Health},
year = {2003},
date-added = {2010-01-10 11:33:20 +0100},
date-modified = {2010-01-10 11:33:25 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Christensen-2003-Techreport_Latent%20Covariates%20in.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p1984},
rating = {0}
}

@article{Ponocny:2002,
author = {I Ponocny},
journal = {Methods of Psychological Research Online},
title = {On the applicability of some IRT models for repeated measurement designs: Conditions, consequences, and Goodness-of-Fit tests},
number = {1},
pages = {21--40},
volume = {7},
year = {2002},
date-added = {2010-01-10 11:33:19 +0100},
date-modified = {2010-07-29 19:40:07 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Ponocny-2002-Methods%20of%20Psychological%20Research%20Online_On%20the%20applicability.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2230},
rating = {0}
}

@article{Spence:2005p14015,
author = {I Spence},
journal = {Journal of Educational and Behavioral Statistics},
title = {No Humble Pie: The Origins and Usage of a Statistical Chart},
abstract = {William Playfair' s pie chart is more than 200 years old and yet its intellectual ori- gins remain obscure. The inspiration likely derived from the logic diagrams of Llull, Bruno, Leibniz, and Euler, which were familiar to William because of the instruction of his mathematician brother John. The pie chart is broadly popular but---despite its common appeal---most experts have not been seduced, and the academy has advised avoidance; nonetheless, the masses have chosen to ignore this advice. This commentary discusses the origins of the pie chart and the appro- priate uses of the form.},
number = {4},
pages = {353--368},
volume = {30},
year = {2005},
date-added = {2010-08-04 09:40:25 +0200},
date-modified = {2010-08-04 09:41:13 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Spence-2005-Journal%20of%20Educational%20and%20Behavioral%20Statistics_No%20Humble%20Pie%20The%20O.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p14015},
rating = {0}
}

@article{Hahn:2009p9589,
author = {Tim Hahn and Thomas Dresler and Ann-Christine Ehlis and Michael M Plichta and Sebastian Heinzel and Thomas Polak and Klaus-Peter Lesch and Felix Breuer and Peter M Jakob and Andreas J Fallgatter},
journal = {Neuroimage},
title = {Neural response to reward anticipation is modulated by Gray's impulsivity},
abstract = {According to the Reinforcement Sensitivity Theory (RST), Gray's dimension of impulsivity, reflecting human trait reward sensitivity, determines the extent to which stimuli activate the Behavioural Approach System (BAS). The potential neural underpinnings of the BAS, however, remain poorly understood. In the present study, we examined the association between Gray's impulsivity as defined by the RST and event-related fMRI BOLD-response to anticipation of reward in twenty healthy human subjects in brain regions previously associated with reward processing. Anticipation of reward during a Monetary Incentive Delay Task elicited activation in key components of the human reward circuitry such as the ventral striatum, the amygdala and the orbitofrontal cortex. Interindividual differences in Gray's impulsivity accounted for a significant amount of variance of the reward-related BOLD-response in the ventral striatum and the orbitofrontal cortex. Specifically, higher trait reward sensitivity was associated with increased activation in response to cues indicating potential reward. Extending previous evidence, here we show that variance in functional brain activation during anticipation of reward is attributed to interindividual differences regarding Gray's dimension of impulsivity. Thus, trait reward sensitivity contributes to the modulation of responsiveness in major components of the human reward system which thereby display a core property of the BAS. Generally, fostering our understanding of the neural underpinnings of the association of reward-related interindividual differences in affective traits might aid researchers in quest for custom-tailored treatments of psychiatric disorders, further disentangling the complex relationship between personality traits, emotion, and health.},
affiliation = {University of Wuerzburg, Department of Psychiatry, Psychosomatics and Psychotherapy, Wuerzburg, Germany. Hahn_T@klinik.uni-wuerzburg.de},
note = {genim},
number = {4},
pages = {1148--53},
volume = {46},
year = {2009},
month = {Jul},
language = {eng},
keywords = {Sex Factors, Male, Image Interpretation: Computer-Assisted, Brain Mapping, Female, Reward, Magnetic Resonance Imaging, Humans, Impulsive Behavior, Emotions, Neuropsychological Tests, Brain},
date-added = {2010-03-25 14:15:11 +0100},
date-modified = {2010-03-25 18:13:57 +0100},
doi = {10.1016/j.neuroimage.2009.03.038},
pii = {S1053-8119(09)00284-5},
pmid = {19328237},
URL = {http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WNP-4VXDTX7-8&_user=2432700&_coverDate=07%252F15%252F2009&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000057263&_version=1&_urlVersion=0&_userid=2432700&md5=fe4bd3058234555d2534a03ad8c3b64f},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Hahn-2009-Neuroimage_Neural%20response%20to%20r.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p9589},
rating = {0}
}

@article{Bland:1997p2897,
author = {J M Bland and Douglas G Altman},
journal = {BMJ},
title = {Cronbach's alpha},
affiliation = {Department of Public Health Sciences, St George's Hospital Medical School, London.},
number = {7080},
pages = {572},
volume = {314},
year = {1997},
month = {Feb},
language = {eng},
keywords = {Statistics as Topic, Analysis of Variance},
date-added = {2010-01-13 14:58:37 +0100},
date-modified = {2010-07-29 20:20:56 +0200},
pmid = {9055718},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Bland-1997-BMJ_Cronbach's%20alpha.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2897},
rating = {3}
}

@article{Sutton:2009p429,
author = {Alexander J Sutton and Nicola J Cooper and David R Jones},
journal = {BMC Med Res Methodol},
title = {Evidence synthesis as the key to more coherent and efficient research},
abstract = {BACKGROUND: Systematic review and meta-analysis currently underpin much of evidence-based medicine. Such methodologies bring order to previous research, but future research planning remains relatively incoherent and inefficient. METHODS: To outline a framework for evaluation of health interventions, aimed at increasing coherence and efficiency through i) making better use of information contained within the existing evidence-base when designing future studies; and ii) maximising the information available and thus potentially reducing the need for future studies. RESULTS: The framework presented insists that an up-to-date meta-analysis of existing randomised controlled trials (RCTs) should always be considered before future trials are conducted. Such a meta-analysis should inform critical design issues such as sample size determination. The contexts in which the use of individual patient data meta-analysis and mixed treatment comparisons modelling may be beneficial before further RCTs are conducted are considered. Consideration should also be given to how any newly planned RCTs would contribute to the totality of evidence through its incorporation into an updated meta-analysis. We illustrate how new RCTs can have very low power to change inferences of an existing meta-analysis, particularly when between study heterogeneity is taken into consideration. CONCLUSION: While the collation of existing evidence as the basis for clinical practice is now routine, a more coherent and efficient approach to planning future RCTs to strengthen the evidence base needs to be developed. The framework presented is a proposal for how this situation can be improved.},
affiliation = {Department of Health Sciences, University of Leicester, Leicester, UK. ajs22@le.ac.uk},
pages = {29},
volume = {9},
year = {2009},
month = {Jan},
language = {eng},
keywords = {Randomized Controlled Trials as Topic, Humans, Outcome Assessment (Health Care), Meta-Analysis as Topic, Research Design, Evidence-Based Medicine, Medical Informatics Applications},
date-added = {2010-01-03 12:24:35 +0100},
date-modified = {2010-01-03 12:24:35 +0100},
doi = {10.1186/1471-2288-9-29},
pii = {1471-2288-9-29},
pmid = {19405972},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Sutton-2009-BMC%20Med%20Res%20Methodol_Evidence%20synthesis%20a.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p429},
rating = {0}
}

@article{Lin:2005p4109,
author = {G Lin and T Zhang},
title = {Loglinear Residual Tests of Moran' I Autocorrelation: An Application to Kentucky Breast Cancer Data},
abstract = {Spatial regressions have been widely used, but their use with the permutation tests of residuals either in linear or loglinear models is rarely seen. In the present study, we have linked the Cliff-Ord permutation test of Moran's I on linear regression errors to loglinear regression residuals under asymptotic normality. We devised both Pearson residual Moran's IP R and deviance residual Moran's IDR tests and applied them to a set of log-rate models for early stage and late-stage breast cancer together with socioeconomic and access-to-care data in Kentucky. The results showed that socioeconomic and access-to-care variables were sufficient to account for spatial clustering of early stage breast carcinomas with breast cancer screening and number of primary care providers being more persistent than county median family income. For late-stage carcinomas, in contrast, the late-stage incidence rate was negatively associated with breast cancer screening level. This result confirmed our expectation: a high screening level is associated with high incidence rate of early stage disease, which in turn reduces late-stage incidence rates. In addition, we located four late-stage breast cancer clusters that cannot be explained by socioeconomic and access-to-care variables.},
year = {2005},
date-added = {2010-01-19 23:50:10 +0100},
date-modified = {2010-01-19 23:50:39 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Lin-2005-_Loglinear%20Residual%20T.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p4109},
rating = {0}
}

@article{Kanno:2006p1724,
author = {Jun Kanno and Ken-ichi Aisaki and Katsuhide Igarashi and Noriyuki Nakatsu and Atsushi Ono and Yukio Kodama and Taku Nagao},
journal = {BMC Genomics},
title = {"Per cell" normalization method for mRNA measurement by quantitative PCR and microarrays},
abstract = {BACKGROUND: Transcriptome data from quantitative PCR (Q-PCR) and DNA microarrays are typically obtained from a fixed amount of RNA collected per sample. Therefore, variations in tissue cellularity and RNA yield across samples in an experimental series compromise accurate determination of the absolute level of each mRNA species per cell in any sample. Since mRNAs are copied from genomic DNA, the simplest way to express mRNA level would be as copy number per template DNA, or more practically, as copy number per cell. RESULTS: Here we report a method (designated the "Percellome" method) for normalizing the expression of mRNA values in biological samples. It provides a "per cell" readout in mRNA copy number and is applicable to both quantitative PCR (Q-PCR) and DNA microarray studies. The genomic DNA content of each sample homogenate was measured from a small aliquot to derive the number of cells in the sample. A cocktail of five external spike RNAs admixed in a dose-graded manner (dose-graded spike cocktail; GSC) was prepared and added to each homogenate in proportion to its DNA content. In this way, the spike mRNAs represented absolute copy numbers per cell in the sample. The signals from the five spike mRNAs were used as a dose-response standard curve for each sample, enabling us to convert all the signals measured to copy numbers per cell in an expression profile-independent manner. A series of samples was measured by Q-PCR and Affymetrix GeneChip microarrays using this Percellome method, and the results showed up to 90 % concordance. CONCLUSION: Percellome data can be compared directly among samples and among different studies, and between different platforms, without further normalization. Therefore, "percellome" normalization can serve as a standard method for exchanging and comparing data across different platforms and among different laboratories.},
affiliation = {Division of Cellular and Molecular Toxicology, National Institute of Health Sciences, 1-18-1, Kamiyoga, Tokyo 158-8501, Japan. kanno@nihs.go.jp},
pages = {64},
volume = {7},
year = {2006},
month = {Jan},
language = {eng},
keywords = {Oligonucleotide Array Sequence Analysis, Mice, Animals, Female, Mice: Inbred C57BL, RNA: Messenger, Reference Standards, Gene Expression Profiling, Polymerase Chain Reaction, DNA, Male},
date-added = {2010-01-09 20:31:42 +0100},
date-modified = {2010-01-09 20:31:42 +0100},
doi = {10.1186/1471-2164-7-64},
pii = {1471-2164-7-64},
pmid = {16571132},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Kanno-2006-BMC%20Genomics_%22Per%20cell%22%20normaliza.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p1724},
rating = {0}
}

@inproceedings{Thomas:2002,
author = {D R Thomas and I R R Lu and Bruno D Zumbo},
journal = {Proceedings},
title = {Int{\'e}gration de la th{\'e}orie de la r{\'e}ponse aux items aux mod{\`e}les par {\'e}quations structurelles: Comparaison avec une r{\'e}gression fond{\'e}e sur des scores TRI},
year = {2002},
date-added = {2010-01-10 11:33:22 +0100},
date-modified = {2010-07-29 20:46:35 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Thomas-2002-Proceedings_Int%C3%A9gration%20de%20la%20th.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2183},
rating = {0}
}

@article{Lubke:2002p14214,
author = {G Lubke and B Muth{\'e}n},
title = {Factor-analyzing Likert-scale data under the assumption of multivariate normality complicates a meaningful comparison of observed groups or latent classes},
abstract = {Treating Likert scale data as continuous outcomes in confirmatory factor analysis violates the assumption of multivariate normality. Given certain requirements pertaining to the number of categories, skewness, size of the factor loadings, etc., it seems nevertheless possible to recover true parameter values if the data stem from a single homogenous population. It is shown in a multi-group and a latent class context that analyzing Likert data under the assumption of multi-variate normality may distort the factor structure differ- ently across groups or classes. Hence, investigating measurement invariance, which is a necessary requirement for a meaningful comparison of observed groups or latent classes, is problematic. Analyzing subscale scores computed from Likert items does not necessarily solve the problem. Based on a power study, some conditions are established to obtain acceptable results.},
year = {2002},
date-added = {2010-08-22 20:30:31 +0200},
date-modified = {2010-08-22 20:31:23 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Lubke-2002-_Factor-analyzing%20Lik.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p14214},
rating = {3}
}

@article{Wray:2010p6629,
author = {Naomi R Wray and Michael E Goddard},
journal = {Genome Med},
title = {Multi-locus models of genetic risk of disease},
abstract = {ABSTRACT: BACKGROUND: Evidence for genetic contribution to complex diseases is described by recurrence risks to relatives of diseased individuals. Genome-wide association studies allow a description of the genetics of the same diseases in terms of risk loci, their effects and allele frequencies. To reconcile the two descriptions requires a model of how risks from individual loci combine to determine an individual's overall risk. METHODS: We derive predictions of risk to relatives from risks at individual loci under a number of models and compare them with published data on disease risk. RESULTS: The model in which risks are multiplicative on the risk scale model is known to imply equality between the recurrence risk to monozygotic twins and the square of the recurrence risk to sibs, a relationship often not observed, especially for low prevalence diseases. We show that this theoretical equality is achieved by allowing impossible probabilities of disease. Other models, in which probabilities of disease are constrained to a maximum of one, generate results more consistent with empirical estimates for a range of diseases. CONCLUSION: The unconstrained multiplicative model, often used in theoretical studies because of its mathematical tractability, is not a realistic model. We find three models, the constrained multiplicative, Odds (or Logit) and Probit (or liability threshold) models, all fit the data on risk to relatives. Currently, in practice it would be difficult to differentiate between these models, but this may become possible if genetic variants that explain the majority of the genetic variance are identified.},
number = {2},
pages = {10},
volume = {2},
year = {2010},
month = {Feb},
language = {ENG},
date-added = {2010-03-03 20:34:52 +0100},
date-modified = {2010-03-03 20:34:52 +0100},
doi = {10.1186/gm131},
pii = {gm131},
pmid = {20181060},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Wray-2010-Genome%20Med_Multi-locus%20models%20o.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p6629},
rating = {0}
}

@article{Bardwell:2002p5385,
author = {W A Bardwell and S Ancoli-Israel and J E Dimsdale},
journal = {Ann Behav Med},
title = {Response bias influences mental health symptom reporting in patients with obstructive sleep apnea},
abstract = {The Medical Outcomes Study (MOS) inventory is widely used to assess quality of life in chronically ill patients. Although response bias was addressed during its initial validation, we are unaware ofsubsequent studies examining how personality characteristics influence responses on this instrument. We examined the impact of response bias on MOS data reported by 44 obstructive sleep apnea (OSA) outpatients who completed the MOS and Marlowe-Crowne Social Desirability Scale (MC). Social desirability implies responding in a way that the participant believes will be viewed favorably; MC is often used to statistically controlfor this form of response bias on self-report measures. The MOS yielded 2 summary scales (Mental and Physical Health) and 8 dimensions (based on Short Form-36 [SF-36]). Data were analyzed using multiple regression analyses. Results show that there is a significant relation between MC and the Mental and Physical Health factors (R2 = .194, F = 5.069, p = .011) and the eight SF-36 dimensions (R2 = .359, F= 2.448, p = .032). Post hoc analyses did not reveal that any one independent variable was a superior predictor of the MC. Participants scoring high on the MC reported 31% greater health than participants scoring low on the MC. Findings suggest that response bias has a significant influence on MOS data from OSA patients, with the greatest impact on mental health indexes. Controlling for response bias on the MOS and other self-report measures is important in both research and clinical situations with OSA and potentially other chronically ill patients.},
affiliation = {Department of Psychiatry, University of California, San Diego and Veterans Affairs San Diego Healthcare System, La Jolla 92093-0804, USA. wabardwell@ucsd.edu},
number = {4},
pages = {313--7},
volume = {23},
year = {2002},
month = {Jan},
language = {eng},
keywords = {Humans, Bias (Epidemiology), Middle Aged, Female, Male, Sleep Apnea: Obstructive, Adult, Quality of Life},
date-added = {2010-02-11 10:32:57 +0100},
date-modified = {2010-07-29 19:14:37 +0200},
pmid = {11761349},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p5385},
rating = {0}
}

@article{BenetMartinez:2006p11165,
author = {V Benet-Martinez},
title = {Cross-Cultural Personality Research: Conceptual and Methodological Issues},
year = {2006},
date-added = {2010-04-25 21:09:52 +0200},
date-modified = {2010-04-25 21:10:34 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Benet-Martinez-2006-_Cross-Cultural%20Perso.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11165},
rating = {4}
}

@article{McArdle:1986p10272,
author = {J J McArdle},
journal = {Behav Genet},
title = {Latent variable growth within behavior genetic models},
number = {1},
pages = {163--200},
volume = {16},
year = {1986},
month = {Jan},
language = {eng},
keywords = {Infant, Models: Genetic, Phenotype, Body Height, Twins, Female, Child Development, Genetics: Behavioral, Male, Child, Child: Preschool, Humans},
date-added = {2010-04-02 15:41:18 +0200},
date-modified = {2010-07-29 20:09:06 +0200},
pmid = {3707483},
local-url = {file://localhost/Users/chl/Dropbox/Papers/McArdle-1986-Behav%20Genet_Latent%20variable%20grow.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p10272},
rating = {0}
}

@article{Waaijenborg:2009p4010,
author = {Sandra Waaijenborg and Aeilko H Zwinderman},
journal = {Bioinformatics},
title = {Correlating multiple SNPs and multiple disease phenotypes: penalized non-linear canonical correlation analysis},
abstract = {MOTIVATION: Canonical correlation analysis (CCA) can be used to capture the underlying genetic background of a complex disease, by associating two datasets containing information about a patient's phenotypical and genetic details. Often the genetic information is measured on a qualitative scale, consequently ordinary CCA cannot be applied to such data. Moreover, the size of the data in genetic studies can be enormous, thereby making the results difficult to interpret. RESULTS: We developed a penalized non-linear CCA approach that can deal with qualitative data by transforming each qualitative variable into a continuous variable through optimal scaling. Additionally, sparse results were obtained by adapting soft-thresholding to this non-linear version of the CCA. By means of simulation studies, we show that our method is capable of extracting relevant variables out of high-dimensional sets. We applied our method to a genetic dataset containing 144 patients with glial cancer. CONTACT: s.waaijenborg@amc.uva.nl.},
affiliation = {Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1100 DD Amsterdam, The Netherlands. s.waaijenborg@amc.uva.nl},
number = {21},
pages = {2764--71},
volume = {25},
year = {2009},
month = {Nov},
language = {eng},
date-added = {2010-01-18 14:56:34 +0100},
date-modified = {2010-01-18 14:56:35 +0100},
doi = {10.1093/bioinformatics/btp491},
pii = {btp491},
pmid = {19689958},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Waaijenborg-2009-Bioinformatics_Correlating%20multiple.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p4010},
read = {Yes},
rating = {0}
}

@article{Eiser:2005p8458,
author = {Christine Eiser and J Richard Eiser and Christopher B Stride},
journal = {Health Qual Life Outcomes},
title = {Quality of life in children newly diagnosed with cancer and their mothers},
abstract = {BACKGROUND: With current treatments, approximately 75% of children diagnosed with cancer can expect to achieve disease-free survival. However, treatments are complex and aggressive, potentially compromising QOL for children and their parents. Although previous work has shown increased anxiety and depression among parents after diagnosis, the recent development of standardised measures of QOL enables us to look more directly at the impact of diagnosis on mothers' and children's QOL. The aims of this study are to i) describe QOL for children and their mothers after diagnosis by comparing their scores with population norms, ii) explore the relationship between mothers' worries about the illness and their QOL, and iii) determine the relationship between mothers ratings of their own QOL and their child. METHOD: A total of 87 families took part, constituting 60% of those eligible. The children included 58 males and 29 females aged between 2 years 6 months to 16 years 3 months (mean = 7 years, median = 5 years 8 months). Diagnoses were acute lymphoblastic leukaemia (ALL, n = 57), brain tumours (n = 11), bone tumours (n = 17) and 2 rare cancers. Mothers completed questionnaires about their own and the child's QOL. RESULTS: Mothers' reported their own and the child's QOL to be significantly lower than population norms. There were significant correlations between mothers' worries and their own and their ratings of the child's QOL and mothers' ratings of their own QOL correlated with their ratings of the child's QOL. CONCLUSION: Both children and their mothers experience significantly compromised QOL in the months following diagnosis. Mothers who rated their own QOL to be poor also rate their child's QOL to be low. These results suggest caution is required where mothers rate their child's QOL. Efforts must continue to be made to improve QOL of children especially in the period immediately following diagnosis.},
affiliation = {CR-UK Child and Family Research Group, Department of Psychology, University of Sheffield, S10 2TP, UK. c.eiser@shef.ac.uk},
pages = {29},
volume = {3},
year = {2005},
month = {Jan},
language = {eng},
keywords = {Precursor Cell Lymphoblastic Leukemia-Lymphoma, Neoplasms, Anxiety, Sickness Impact Profile, Brain Neoplasms, Adolescent, Mothers, Proxy, Health Knowledge: Attitudes: Practice, Female, Child: Preschool, Quality of Life, Male, Questionnaires, Child, Great Britain, Bone Neoplasms, Humans},
date-added = {2010-03-21 17:59:42 +0100},
date-modified = {2010-03-21 17:59:42 +0100},
doi = {10.1186/1477-7525-3-29},
pii = {1477-7525-3-29},
pmid = {15860126},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Eiser-2005-Health%20and%20Quality%20of%20Life%20Outcomes_Quality%20of%20life%20in%20c.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p8458},
rating = {0}
}

@article{Adamson:2009p11033,
author = {Lauren B Adamson and Roger Bakeman and Deborah F Deckner and MaryAnn Romski},
journal = {J Autism Dev Disord},
title = {Joint engagement and the emergence of language in children with autism and Down syndrome},
abstract = {Systematic longitudinal observations were made as typically developing toddlers and young children with autism and with Down syndrome interacted with their caregivers in order to document how joint engagement developed over a year-long period and how variations in joint engagement experiences predicted language outcome. Children with autism displayed a persistent deficit in coordinated joint attention; children with Down syndrome were significantly less able to infuse symbols into joint engagement. For all groups, variations in amount of symbol-infused supported joint engagement, a state in which the child attended to a shared object and to language but not actively to the partner, contributed to differences in expressive and receptive language outcome, over and above initial language capacity.},
affiliation = {Department of Psychology, Georgia State University, Atlanta, 30302-5010, USA. ladamson@gsu.edu},
number = {1},
pages = {84--96},
volume = {39},
year = {2009},
month = {Jan},
language = {eng},
keywords = {Down Syndrome, Father-Child Relations, Object Attachment, Longitudinal Studies, Language Development Disorders, Symbolism, Female, Mother-Child Relations, Play Therapy, Stereotyped Behavior, Infant, Interpersonal Relations, Attention, Male, Communication, Humans, Orientation, Vocabulary, Autistic Disorder, Child: Preschool},
date-added = {2010-04-14 13:37:04 +0200},
date-modified = {2010-04-14 13:37:04 +0200},
doi = {10.1007/s10803-008-0601-7},
pmid = {18581223},
URL = {http://www.springerlink.com/content/8l6r877723773174/},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Adamson-2009-J%20Autism%20Dev%20Disord_Joint%20engagement%20and.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11033},
rating = {0}
}

@article{Glas:1999,
author = {C A W Glas},
journal = {Psychometrika},
title = {Modification indices for the 2-pl and the nominal response model},
pages = {273--294},
volume = {64},
year = {1999},
date-added = {2010-01-10 11:33:18 +0100},
date-modified = {2010-01-10 11:33:25 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Glas-1999-Psychometrika_Modification%20indices.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p1890},
read = {Yes},
rating = {0}
}

@article{Abswoude:2004a,
author = {Alexandra A H van Abswoude and Jeroen K Vermunt and Bas T Hemker and L Andries van der Ark},
journal = {Applied Psychological Measurement},
title = {Mokken scale analysis using hierarchical clustering procedures},
abstract = {Mokken scale analysis (MSA) can be used to assess and build unidimensional scales from an item pool that is sensitive to multiple dimensions. These scales satisfy a set of scaling conditions, one of which follows from the model of monotone homogeneity. An important drawback of the MSA program is that the sequential item selection and scale construction procedure may not find the dominant underlying dimensionality of the responses to a set of items. The authors investigated alternative hierarchical item selection procedures and compared the performance of
four hierarchical methods and the sequential clustering method in the MSA context. The results showed that hierarchical clustering methods can improve the search process of the dominant dimensionality of a data matrix. In particular, the complete linkage and scale linkage methods were promising in finding the dimensionality of the item response data from a set of items.},
number = {5},
pages = {332--354},
volume = {28},
year = {2004},
date-added = {2010-01-10 11:33:23 +0100},
date-modified = {2010-07-29 20:42:55 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Abswoude-2004-Applied%20Psychological%20Measurement_Mokken%20scale%20analysi.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2172},
read = {Yes},
rating = {0}
}

@article{Shiels:1997p2666,
author = {C Shiels and M Eccles and A Hutchinson and E Gardiner and L Smoljanovic},
journal = {Family Practice},
title = {The inter-rater reliability of a generic measure of severity of illness},
number = {6},
pages = {466--471},
volume = {14},
year = {1997},
date-added = {2010-01-13 09:28:48 +0100},
date-modified = {2010-01-13 09:30:11 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Shiels-1997-Family%20Practice_The%20inter-rater%20reli.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2666},
rating = {0}
}

@article{Goldsmith:2010p12297,
author = {Kimberley A Goldsmith and Matthew T Dyer and Martin J Buxton and Linda D Sharples},
journal = {Health Qual Life Outcomes},
title = {Mapping of the EQ-5D index from clinical outcome measures and demographic variables in patients with coronary heart disease},
abstract = {ABSTRACT: BACKGROUND: The EuroQoL 5D (EQ-5D) is a questionnaire that provides a measure of utility for cost-effectiveness analysis. The EQ-5D has been widely used in many patient groups, including those with coronary heart disease. Studies often require patients to complete many questionnaires and the EQ-5D may not be gathered. This study aimed to assess whether demographic and clinical outcome variables, including scores from a disease specific measure, the Seattle Angina Questionnaire (SAQ), could be used to predict, or map, the EQ-5D index value where it is not available. METHODS: Patient-level data from 5 studies of cardiac interventions were used. The data were split into two groups - approximately 60% of the data were used as an estimation dataset for building models, and 40% were used as a validation dataset. Forward ordinary least squares linear regression methods and measures of prediction error were used to build a model to map to the EQ-5D index. Age, sex, a proxy measure of disease stage, Canadian Cardiovascular Society (CCS) angina severity class, treadmill exercise time (ETT) and scales of the SAQ were examined. RESULTS: The exertional capacity (ECS), disease perception (DPS) and anginal frequency scales (AFS) of the SAQ were the strongest predictors of the EQ-5D index and gave the smallest root mean square errors. A final model was chosen with age, gender, disease stage and the ECS, DPS and AFS scales of the SAQ. ETT and CCS did not improve prediction in the presence of the SAQ scales. Bland-Altman agreement between predicted and observed EQ-5D index values was reasonable for values greater than 0.4, but below this level predicted values were higher than observed. The 95% limits of agreement were wide (-0.34, 0.33). CONCLUSIONS: Mapping of the EQ-5D index in cardiac patients from demographics and commonly measured cardiac outcome variables is possible; however, prediction for values of the EQ-5D index below 0.4 was not accurate. The newly designed 5-level version of the EQ-5D with its increased ability to discriminate health states may improve prediction of EQ-5D index values.},
number = {1},
pages = {54},
volume = {8},
year = {2010},
month = {Jun},
language = {ENG},
date-added = {2010-06-09 20:55:11 +0200},
date-modified = {2010-06-09 20:55:11 +0200},
doi = {10.1186/1477-7525-8-54},
pii = {1477-7525-8-54},
pmid = {20525323},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Goldsmith-2010-Health%20and%20Quality%20of%20Life%20Outcomes_Mapping%20of%20the%20EQ-5D-1.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p12297},
rating = {0}
}

@article{Gottlieb:2003p12681,
author = {G Gottlieb},
journal = {Human Development},
title = {On Making Behavioral Genetics Truly Developmental},
abstract = {What will it take to make behavioral genetics truly developmental? In my opinion, the purely statistical population view will have to be abandoned in favor of the study of individuals: An analysis of the bi-directional relations from gene action to the external environment over the life course, including the prenatal period. I critically examine the somewhat vexed concept of {\"e}gene-environment interaction{\'\i}, a crucial first step in correctly understanding the relational view of causality at the organism-environment level of analysis. I conclude by present- ing a highly detailed psychobiological model for analyzing behavioral develop- ment, with special attention to the genetic level of analysis.},
pages = {337--355},
volume = {46},
year = {2003},
date-added = {2010-06-15 22:44:35 +0200},
date-modified = {2010-06-15 22:45:24 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Gottlieb-2003-Human%20Development_On%20Making%20Behavioral.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p12681},
rating = {0}
}

@article{Gabbard:2010p5097,
author = {Carl Gabbard and Priscila Cacola},
journal = {Rev Neurol},
title = {[Children with developmental coordination disorder have difficulty with action representation]},
abstract = {INTRODUCTION: The study of children with developmental coordination disorder (DCD) has emerged as a vibrant line of inquiry over the last two decades. The literature indicates quite clearly that children with DCD display deficits with an array of perceptual-motor and daily living skills. The movements of children with DCD are often described as clumsy and uncoordinated and lead to difficulties with performing many of the activities of daily living and sports that typically developing children perform easily. DEVELOPMENT: It has been hypothesized, based on limited research, that an underlying problem is a deficit in generating and/or monitoring an action representation termed the internal modeling deficit hypothesis. According to the hypothesis, children with DCD have significant limitations in their ability to accurately generate and utilize internal models of motor planning and control. CONCLUSION: The focus of this review is on one of the methods used to examine action representation-motor imagery, which theorists argue provides a window into the process of action representation. Included are research methods and possible brain structures involved. An addition, a paradigm unique with this population-estimation of reachability (distance) via motor imagery, will be described.},
affiliation = {Texas AM University, College Station, Texas, Estados Unidos. c-gabbard@tamu.edu},
number = {1},
pages = {33--8},
volume = {50},
year = {2010},
month = {Jan},
language = {spa},
date-added = {2010-02-05 20:15:22 +0100},
date-modified = {2010-02-05 20:15:22 +0100},
pii = {rn2009266},
pmid = {20073021},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p5097},
rating = {0}
}

@article{Spiegel:2005p4599,
author = {Brennan M R Spiegel and Zobair M Younossi and Ron D Hays and Dennis Revicki and Sean Robbins and Fasiha Kanwal},
journal = {Hepatology},
title = {Impact of hepatitis C on health related quality of life: a systematic review and quantitative assessment},
abstract = {Hepatitis C virus (HCV) diminishes health related quality of life (HRQOL), and it is now common to measure HRQOL in clinical trials. We sought to summarize the HRQOL data in HCV, and to establish the minimally clinically important difference (MCID) in HRQOL scores in HCV. We performed a systematic review to identify relevant studies, and converted HRQOL data from each study into clinically interpretable statistics. An expert panel used a modified Delphi technique to estimate the MCID in HCV. We found that patients with HCV scored lower than controls across all scales of the SF-36. Patients achieving sustained virological response (SVR) scored higher across all scales versus patients without SVR, especially in the physical health domains. HRQOL differences did not correspond with differences in liver histology or ALT levels. Based upon the published data, the expert panel concluded that the SF-36 vitality scale was most relevant in patients with HCV, and generated a mean MCID of 4.2 points on this scale. In conclusion, patients with HCV have a clinically significant decrement in HRQOL versus controls, and physical HRQOL improves in patients achieving SVR but not in those without SVR. The data further suggest that traditional outcomes fail to capture the full spectrum of illness related to chronic HCV. A difference of 4.2 points on the SF-36 vitality scale can be used as an estimate of the MCID in HCV, and this value may be used as the basis for power calculations in clinical trials evaluating HRQOL. Supplementary material for this article can be found on the HEPATOLOGY website (http://www.interscience.wiley.com/jpages/0270-9139/suppmat/index.html).},
affiliation = {Division of Gastroenterology, VA Greater Los Angeles Healthcare System, USA.},
number = {4},
pages = {790--800},
volume = {41},
year = {2005},
month = {Apr},
language = {eng},
keywords = {Viral Load, Neuropsychological Tests, Humans, Health Status, Severity of Illness Index, Quality of Life, Delphi Technique, Hepatitis C, Case-Control Studies},
date-added = {2010-01-29 22:33:54 +0100},
date-modified = {2010-07-29 20:00:05 +0200},
doi = {10.1002/hep.20659},
pmid = {15791608},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Spiegel-2005-Hepatology_Impact%20of%20hepatitis.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p4599},
rating = {0}
}

@article{VanKrimpenStoop:2002p2682,
author = {E M L A Van Krimpen-Stoop and R R Meijer},
journal = {Applied Psychological Measurement},
title = {Detection of Person Misfit in Computerized Adaptive Tests with Polytomous Items},
abstract = {Item scores that do not fit an assumed item response theory model may cause the latent trait value to be inaccurately estimated. For a computer- izedadaptivetest(CAT)usingdichotomousitems, several person-fit statistics for detecting misfitting item score patterns have been proposed. Both for paper-and-pencil (P{\&}P) tests and CATs, detection ofpersonmisfitwithpolytomousitemsishardly explored. In this study, the nominal and empirical null distributionsofthestandardizedlog-likelihoodstatis- tic for polytomous items are compared both for P{\&}P tests and CATs. Results showed that the empirical distribution of this statistic differed from the assumed standard normal distribution for both P{\&}P tests and CATs. Second, a new person-fit statistic based on the cumulative sum (CUSUM) procedure from statistical processcontrolwasproposed.Bymeansofsimulated data, critical values were determined that can be used to classify a pattern as fitting or misfitting. The effectiveness of the CUSUM to detect simulees with itempreknowledgewasinvestigated.Detectionrates using the CUSUM were high for realistic numbers ofdiscloseditems.},
number = {2},
pages = {164--180},
volume = {26},
year = {2002},
date-added = {2010-01-13 09:59:04 +0100},
date-modified = {2010-07-29 19:16:53 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Van%20Krimpen-Stoop-2002-Applied%20Psychological%20Measurement_Detection%20of%20Person.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p2682},
rating = {0}
}

@article{Balazs:2006p12902,
author = {K Balazs and I Hidegkuti and Paul De Boeck},
journal = {Applied Psychological Measurement},
title = {Detecting Heterogeneity in Logistic Regression Models},
abstract = {In the context of item response theory, it is not uncommon that person-by-item data are correlated beyond the correlation that is captured by the model---in other words, there is extra binomial variation. Heterogeneity of the parameters can explain this variation. There is a need for proper statistical methods to indicate possible extra heterogeneity and its location because investigating all different combinations of random parameters is not practical and sometimes even unfeasible. The ignored random person effects are the focus of this study. Considering the random
weights linear logistic test model, random effects can occur as a general latent trait and as weights of covariates. A simulation study was conducted with different sources and degrees of heterogeneity to investigate and compare various methods: individual analyses (one per person), marginal modeling, principal component analysis of the raw data, DIMTEST, and DETECT. The methods are illustrated with an application on deductive reasoning.},
number = {4},
pages = {322--344},
volume = {30},
year = {2006},
date-added = {2010-06-24 17:21:43 +0200},
date-modified = {2010-07-29 20:46:12 +0200},
doi = {10.1177/0146621605286315},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Balazs-2006-Applied%20Psychological%20Measurement_Detecting%20Heterogene.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p12902},
rating = {0}
}

@article{Wilt:2008p11663,
author = {J Wilt and W Revelle},
title = {Extraversion},
year = {2008},
date-added = {2010-05-14 20:48:04 +0200},
date-modified = {2010-05-14 20:49:21 +0200},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Wilt-2008-_Extraversion.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11663},
rating = {0}
}

@article{Blekas:2004p3422,
author = {K Blekas and A Likas},
title = {Incremental Mixture Learning for Clustering Discrete Data},
abstract = {This paper elaborates on an efficient approach for clustering discrete data by incrementally building multinomial mixture models through likelihood maximization using the Expectation-Maximization (EM) algorithm. The method adds sequentially at each step a new multinomial component to a mixture model based on a combined scheme of global and local search in order to deal with the initialization problem of the EM algorithm. In the global search phase several initial values are examined for the parameters of the multinomial component. These values are selected from an appropriately defined set of initialization candidates. Two methods are proposed here to specify the elements of this set based on the agglomerative and the kd-tree clustering algorithms. We investigate the performance of the incremental learning technique on a synthetic and a real dataset and also provide comparative results with the standard EM-based multinomial mixture model.},
year = {2004},
date-added = {2010-01-15 15:05:36 +0100},
date-modified = {2010-01-15 15:06:39 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Blekas-2004-_Incremental%20Mixture.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p3422},
rating = {0}
}

@article{Middeldorp:2010p5659,
author = {Christel M Middeldorp and Jacqueline M Vink and John M Hettema and Eco J C de Geus and Kenneth S Kendler and Gonneke Willemsen and Michael C Neale and Dorret I Boomsma and Xiangning Chen},
journal = {Am J Med Genet B Neuropsychiatr Genet},
title = {An association between Epac-1 gene variants and anxiety and depression in two independent samples},
abstract = {Deficiency in signal transduction might play a role in the development of anxiety and depression, as suggested by a study on the involvement of the PKA-independent Epac pathway. We investigated the association between Epac-1 gene variants, also known as RapGEF-3, and measures of anxiety and depression in a Dutch twin-family sample. Replication was sought in a USA sample consisting of unrelated individuals. Genotype and phenotype data were available for 910 Dutch and 684 USA individuals. Longitudinal self-report measures of neuroticism, anxiety and depression and genetic factor scores (GFS-NL), based on these measures, were analyzed in the Dutch sample. In the USA sample, neuroticism and Genetic Factor Scores (GFS-USA), based on neuroticism and diagnoses of anxiety disorders and depression, were analyzed. Three intronic SNPs were genotyped. Analyses were performed in QTDT. Genotype and haplotype frequencies differed significantly between the samples. In the Dutch sample, rs2072115 showed a significant dominant effect for anxiety and depression. Subjects with haplotype G-C-C (ordered rs2072115-rs757281-2074533) had significantly lower anxiety, neuroticism and GFS-NL scores. In the USA sample, a significant additive effect of rs2074533 on GFS-USA was found. Subjects with haplotypes G-C-C and A-C-T had significantly higher and lower GFS-USA scores, respectively. Both samples showed an association between Epac-1 gene variants and anxiety and depression, but for different variants or in opposite directions. The divergent results could be due to differences in linkage disequilibrium between the investigated SNPs and a functional polymorphism in the Dutch and USA sample.},
affiliation = {Department of Biological Psychology, VU University Amsterdam, Amsterdam, The Netherlands. cm.middeldorp@psy.vu.nl},
number = {1},
pages = {214--9},
volume = {153B},
year = {2010},
month = {Jan},
language = {eng},
date-added = {2010-02-12 20:23:00 +0100},
date-modified = {2010-02-12 20:23:00 +0100},
doi = {10.1002/ajmg.b.30976},
pmid = {19475578},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Middeldorp-2010-Am%20J%20Med%20Genet%20B%20Neuropsychiatr%20Genet_An%20association%20betwe.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p5659},
rating = {0}
}

@article{Limbers:2008p11936,
author = {Christine A Limbers and Daniel A Newman and James W Varni},
journal = {J Pediatr Psychol},
title = {Factorial invariance of child self-report across healthy and chronic health condition groups: a confirmatory factor analysis utilizing the PedsQLTM 4.0 Generic Core Scales},
abstract = {OBJECTIVES: The objective of the present study was to examine the factorial invariance of the PedsQL 4.0 Generic Core Scales for child self-report across 11,433 children ages 5-18 with chronic health conditions and healthy children. METHODS: Multigroup Confirmatory Factor Analysis was performed specifying a five-factor model. Two multigroup structural equation models, one with constrained parameters and the other with unconstrained parameters, were proposed in order to compare the factor loadings across children with chronic health conditions and healthy children. RESULTS: Metric invariance (i.e., equal factor loadings) was demonstrated based on stability of the Comparative Fit Index (CFI) between the two models, and several additional indices of practical fit including the root mean squared error of approximation, the Non-normed Fit Index, and the Parsimony Normed Fit Index. CONCLUSIONS: The findings support an equivalent five-factor structure on the PedsQL 4.0 Generic Core Scales across healthy and chronic health condition groups. These findings suggest that when differences are found across chronic health condition and healthy groups when utilizing the PedsQL, these differences are more likely real differences in self-perceived health-related quality of life, rather than differences in interpretation of the PedsQL items as a function of health status.},
affiliation = {College of Architecture, Texas A{\&}M University, 3137 TAMU, College Station, Texas 77843-3137, USA.},
number = {6},
pages = {630--9},
volume = {33},
year = {2008},
month = {Jul},
language = {eng},
keywords = {Chronic Disease, Male, Factor Analysis: Statistical, Child, Health Status, Female, Child: Preschool, Questionnaires, Quality of Life, Adolescent, Humans},
date-added = {2010-05-23 16:53:21 +0200},
date-modified = {2010-07-29 19:35:17 +0200},
doi = {10.1093/jpepsy/jsm131},
pii = {jsm131},
pmid = {18165221},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Limbers-2008-J%20Pediatr%20Psychol_Factorial%20invariance.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11936},
rating = {4}
}

@article{Luna:2007p10190,
author = {Augustin Luna and Kristin K Nicodemus},
journal = {Bioinformatics},
title = {snp.plotter: an R-based SNP/haplotype association and linkage disequilibrium plotting package},
abstract = {snp.plotter is a newly developed R package which produces high-quality plots of results from genetic association studies. The main features of the package include options to display a linkage disequilibrium (LD) plot below the P-value plot using either the r2 or D' LD metric, to set the X-axis to equal spacing or to use the physical map of markers, and to specify plot labels, colors, symbols and LD heatmap color scheme. snp.plotter can plot single SNP and/or haplotype data and simultaneously plot multiple sets of results. R is a free software environment for statistical computing and graphics available for most platforms. The proposed package provides a simple way to convey both association and LD information in a single appealing graphic for genetic association studies. AVAILABILITY: Downloadable R package and example datasets are available at http://cbdb.nimh.nih.gov/~kristin/snp.plotter.html and http://www.r-project.org.},
affiliation = {GCAP/CBDB, NIMH/NIH, 10 Center Drive, Room 4S-235, Bethesda, MD 20814, USA.},
number = {6},
pages = {774--6},
volume = {23},
year = {2007},
month = {Mar},
language = {eng},
keywords = {Software, Chromosome Mapping, DNA Mutational Analysis, Algorithms, Computer Graphics, Polymorphism: Single Nucleotide, Linkage Disequilibrium, User-Computer Interface, Programming Languages, Haplotypes},
date-added = {2010-04-01 18:14:07 +0200},
date-modified = {2010-04-01 18:14:07 +0200},
doi = {10.1093/bioinformatics/btl657},
pii = {btl657},
pmid = {17234637},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Luna-2007-Bioinformatics_snp.plotter%20an%20R-ba.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p10190},
rating = {0}
}

@article{Varnell:2004p9335,
author = {Sherri P Varnell and David M Murray and Jessica B Janega and Jonathan L Blitstein},
journal = {Am J Public Health},
title = {Design and analysis of group-randomized trials: a review of recent practices},
abstract = {We reviewed group-randomized trials (GRTs) published in the American Journal of Public Health and Preventive Medicine from 1998 through 2002 and estimated the proportion of GRTs that employ appropriate methods for design and analysis. Of 60 articles, 9 (15.0%) reported evidence of using appropriate methods for sample size estimation. Of 59 articles in the analytic review, 27 (45.8%) reported at least 1 inappropriate analysis and 12 (20.3%) reported only inappropriate analyses. Nineteen (32.2%) reported analyses at an individual or subgroup level, ignoring group, or included group as a fixed effect. Hence increased vigilance is needed to ensure that appropriate methods for GRTs are employed and that results based on inappropriate methods are not published.},
affiliation = {NorthropGrumman Mission Systems, Atlanta, GA, USA.},
number = {3},
pages = {393--9},
volume = {94},
year = {2004},
month = {Mar},
language = {eng},
keywords = {Periodicals as Topic, Quality Control, Sample Size, Epidemiologic Research Design, Sensitivity and Specificity, Randomized Controlled Trials as Topic, Cluster Analysis, Public Health Practice, Intervention Studies, Humans, Bibliometrics},
date-added = {2010-03-23 18:38:52 +0100},
date-modified = {2010-07-29 19:14:25 +0200},
pmid = {14998802},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Varnell-2004-Am%20J%20Public%20Health_Design%20and%20analysis.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p9335},
rating = {0}
}

@article{Esary:1967p6266,
author = {J D Esary and F Proschan and D W Walkup},
journal = {The Annals of Mathematical Statistics},
title = {Association of Random Variables, with Applications},
number = {5},
pages = {1466--1474},
volume = {38},
year = {1967},
date-added = {2010-02-19 21:56:52 +0100},
date-modified = {2010-02-19 21:57:38 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Esary-1967-The%20Annals%20of%20Mathematical%20Statistics_Association%20of%20Rando.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p6266},
rating = {0}
}

@article{Burton:2006p6940,
author = {Andrea Burton and Douglas G Altman and Patrick Royston and Roger L Holder},
journal = {Stat Med},
title = {The design of simulation studies in medical statistics},
abstract = {Simulation studies use computer intensive procedures to assess the performance of a variety of statistical methods in relation to a known truth. Such evaluation cannot be achieved with studies of real data alone. Designing high-quality simulations that reflect the complex situations seen in practice, such as in prognostic factors studies, is not a simple process. Unfortunately, very few published simulation studies provide sufficient details to allow readers to understand fully all the processes required to design a simulation study. When planning a simulation study, it is recommended that a detailed protocol be produced, giving full details of how the study will be performed, analysed and reported. This paper details the important considerations necessary when designing any simulation study, including defining specific objectives of the study, determining the procedures for generating the data sets and the number of simulations to perform. A checklist highlighting the important considerations when designing a simulation study is provided. A small review of the literature identifies the current practices within published simulation studies.},
affiliation = {Cancer Research UK/NHS Centre for Statistics in Medicine, Oxford, UK. andrea.burton@cancer.org.uk},
number = {24},
pages = {4279--92},
volume = {25},
year = {2006},
month = {Dec},
language = {eng},
keywords = {Humans, Biometry, Research Design, Computer Simulation, Biomedical Research},
date-added = {2010-03-06 12:23:55 +0100},
date-modified = {2010-07-29 20:20:56 +0200},
doi = {10.1002/sim.2673},
pmid = {16947139},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Burton-2006-Stat%20Med_The%20design%20of%20simula.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p6940},
rating = {0}
}

@article{Kolenikov:2005p4100,
author = {S Kolenikov and G Angeles},
title = {The Use of Discrete Data
in Principal Component Analysis for Socio-Economic Status Evaluation},
year = {2005},
date-added = {2010-01-19 23:31:58 +0100},
date-modified = {2010-01-19 23:32:23 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Kolenikov-2005-_The%20Use%20of%20Discrete.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p4100},
rating = {0}
}

@article{Fujisaki:2004p6620,
author = {K Fujisaki},
title = {A STRUCTURAL EQUATION MODEL ANALYSIS OF PSYCHOSOMATIC SUFFERINGS IN ADULT ASTHMA PATIENTS},
abstract = {Objective: The aim of this study was to disclose asthmatics' psychosomatic sufferings, which meant the body-mind problems, of adult asthma patients in the long-term management of this chronic dis- ease. Using structural equation modeling, we tried to analyze the relations among sub-scores as structural sub-concepts of the Asthma specific Health-related Quality of Life (Asthma-QOL) and the Body Image Disturbance (BID).
Methods: A cross-sectional survey was conducted by using a self-report questionnaire to adult asth- ma patients who were visiting primary physicians specialized in respiratory disease. The question- naire was filled in anonymously, and the patient was free to make a final decision on returning the completed questionnaire. BID and Asthma-QOL levels were measured by using Body Image Assess- ment Tool-22 (BIAT-22) and Asthma Health Questionnaire-33 Japan (AHQ-33J), respectively. Somatosensory Amplification Scale (SSAS) was also used to measure patients' Somatosensory Ampli- fication (SSA). SSA was individuals' psychosomatic sensitivity indicator which has been considered to indicate personal characteristics strongly related to BID.
Results: The survey was conducted in cooperation with eleven municipal hospitals with a bed capaci- ty of 100 to 400, and complete response was obtained in 367 patients(41.8% collected). As a result, a path diagram in structural equation modeling with effective goodness of fit index was obtained, including six variables of AHQ-33J, one variable SSAS, and four variables of BIAT-22 (χ2=78.265, df=36, p=0.000, GFI=0.964, AGFI=0.933, RMSEA=0.057). The path diagram of this study confirmed the followings regarding the relationship between QOL and body image of asthma patients. (i) Body image of the asthma patient is defined, not by the degree of symptoms, but rather by obstacles and difficulties felt in everyday life which derive from the degree of symptoms. Emotional problems do not directly affect the body image of asthma patient. (ii) Somatosensory sensitivity affects both QOL and body image of the asthma patient. (iii) Higher somatosensory sensitivity gives more aggravating factors which trigger an asthma attack, leading to increased obstacles and difficulties felt in every- day life. (iv) Somatosensory sensitivity not only affects body image directly but also aggravates body image problems through increased obstacles and difficulties felt in everyday life.},
year = {2004},
date-added = {2010-03-03 20:30:09 +0100},
date-modified = {2010-03-03 20:31:01 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Fujisaki-2004-_A%20STRUCTURAL%20EQUATIO.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p6620},
rating = {0}
}

@article{LeNormand:2000p12937,
author = {M T Le Normand and L Vaivre-Douret and C Payan and H Cohen},
journal = {J Clin Exp Neuropsychol},
title = {Neuromotor development and language processing in developmental dyspraxia: a follow-up case study},
abstract = {A longitudinal study of a child (MV) with developmental verbal dyspraxia was conducted to determine to what extent language development and motor performance in this clinical diagnosis followed a similar course of maturation. Patient MV was observed for two years from the age of 5 years and 6 months. Initially, this young patient exhibited unintelligible and atypical speech production (multiword utterances without consonants), delay in balance and coordination, and impairments in rhythmic tasks; but she was otherwise developing normally with no intellectual impairment or behavioral disorder. MRI scans showed moderately enlarged ventricles, a thin, incompletely myelinated corpus callosum and intact basal ganglia. Two years later, MV's performance was nearly normal only in comprehension aspects of language. In contrast, production aspects of language and speech and neuromotor development showed very little improvement after two years. These observations first suggest that development of receptive and expressive domains within language may be asynchronous, and that the progression of motor control of language appears to follow a parallel course to neuromotor development.},
affiliation = {Groupe Hospitalier Piti{\'e}-Salp{\^e}tri{\`e}re, Paris, France. lenorman@infobiogen.fr},
number = {3},
pages = {408--17},
volume = {22},
year = {2000},
month = {Jun},
language = {eng},
keywords = {Language Development, Apraxias, Child Development, Developmental Disabilities, Magnetic Resonance Imaging, Neuropsychological Tests, Female, Child, Child: Preschool, Brain, Psychomotor Performance, Humans, Neurologic Examination, Speech Intelligibility},
date-added = {2010-06-25 21:47:02 +0200},
date-modified = {2010-07-29 19:32:53 +0200},
pmid = {10855048},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p12937},
rating = {0}
}

@article{Gunnes:2009p1552,
author = {Nina Gunnes and Taral G Seierstad and Steinar Aamdal and Paal F Brunsvig and Anne-Birgitte Jacobsen and Stein Sundstr{\o}m and Odd O Aalen},
journal = {BMC Med Res Methodol},
title = {Assessing quality of life in a randomized clinical trial: correcting for missing data},
abstract = {BACKGROUND: Health-related quality of life is a topic of current interest. This paper considers a randomized phase III study of radiation therapy with concurrent chemotherapy (docetaxel) versus radiation therapy alone in non-small cell lung cancer, stage III A/B. Longitudinal data on quality of life have been obtained through repeated administration of a multi-item questionnaire (EORTC QLQ-C30) developed by the European Organisation for Research and Treatment of Cancer. Missingness in the data is owing to patients having failed to complete the questionnaire at some of the scheduled filling-in times. METHODS: We have analysed a monotone (in terms of missingness) subset of the data as regards estimation of the mean score of a summary measure of self-reported quality of life in a hypothetical drop-out-free population at different points in time. Missingness is a difficult issue of great importance. We have therefore chosen to compare three different methods that are relatively easy to implement: the linear-increments method, the inverse-probability-weighting method and the Markov-process method. Single imputation has been applied in a supplementary analysis to fill in for all the non-consecutive missing score values prior to the execution of the estimation procedure. RESULTS: For the response in focus, the observed mean score at a certain time is larger than the estimated mean scores, which implies that the true mean score is easily overestimated unless the missingness is appropriately adjusted for. Comparison of the treatment arms shows a significant difference in mean score at the end of treatment. CONCLUSION: Use of proper methodology developed for analysing data subject to missingness is necessary to reduce potential estimation bias. The quality of life of patients receiving radiation therapy with concurrent chemotherapy (docetaxel) appears somewhat worse than that of patients receiving radiation therapy alone in the period during which treatment is given. The conclusions are robust for the choice of statistical methods.},
affiliation = {Department of Biostatistics, University of Oslo, P,O, Box 1122 Blindern, N-0317 Oslo, Norway. nina.gunnes@medisin.uio.no},
pages = {28},
volume = {9},
year = {2009},
month = {Jan},
language = {eng},
keywords = {Quality of Life, Markov Chains, Longitudinal Studies, Male, Probability, Humans, Taxoids, Carcinoma: Non-Small-Cell Lung, Female, Chemotherapy: Adjuvant, Linear Models, Questionnaires, Antineoplastic Agents, Statistics as Topic},
date-added = {2010-01-07 16:37:57 +0100},
date-modified = {2010-01-07 16:37:57 +0100},
doi = {10.1186/1471-2288-9-28},
pii = {1471-2288-9-28},
pmid = {19405936},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Gunnes-2009-BMC%20Med%20Res%20Methodol_Assessing%20quality%20of.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p1552},
read = {Yes},
rating = {0}
}

@article{Wilson:1933p881,
author = {E B Wilson},
journal = {Proceedings of the National Academy of Sciences},
title = {On the invariance of general intelligence},
pages = {768--772},
volume = {19},
year = {1933},
date-added = {2010-01-03 18:09:50 +0100},
date-modified = {2010-01-03 18:11:07 +0100},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Wilson-1933-Proceedings%20of%20the%20National%20Academy%20of%20Sciences_On%20the%20invariance%20of.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p881},
rating = {0}
}

@article{Two:2009p11808,
author = {Rebecca Two and Aneesa Verjee-Lorenz and Darren Clayson and Mehul Dalal and Kelly Grotzinger and Zobair M Younossi},
journal = {Value Health},
title = {A Methodology for Successfully Producing Global Translations of Patient Reported Outcome Measures for Use in Multiple Countries},
abstract = {ABSTRACT The production of accurate and culturally relevant translations of patient reported outcome (PRO) measures is essential for the success of international clinical trials. Although there are many reports in publication regarding the translation of PRO measures, the techniques used to produce single translations for use in multiple countries (global translations) are not well documented. This article addresses this apparent lack of documentation and presents the methodology used to create global translations of the Chronic Liver Disease Questionnaire-Hepatitis C Virus (CLDQ-HCV). The challenges of creating a translation for use in multiple countries are discussed, and the criteria for a global translation project explained. Based on a thorough translation and linguistic validation methodology including a concept elaboration, multiple forward translations, two back translations, reviews by in-country clinicians and the instrument developer, pilot testing in each target country and multiple sets of proofreading, the key concept of the global translation methodology is consistent international harmonization, achieved through the involvement of linguists from each target country at every stage of the process. This methodology enabled the successful resolution of the translation issues encountered, and resulted in consistent translations of the CLDQ-HCV that were linguistically and culturally appropriate for all target countries.},
affiliation = {PharmaQuest Ltd, Jeffersons Business Centre, Banbury, Oxfordshire, UK.},
pages = {},
year = {2009},
month = {Aug},
language = {ENG},
date-added = {2010-05-23 10:43:32 +0200},
date-modified = {2010-05-23 10:43:32 +0200},
doi = {10.1111/j.1524-4733.2009.00585.x},
pii = {VHE585},
pmid = {19695006},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Two-2009-Value%20Health_A%20Methodology%20for%20Su.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11808},
rating = {0}
}

@article{Wilderjans:2009p11606,
author = {Tom F Wilderjans and Eva Ceulemans and Henk A L Kiers and Kristof Meers},
journal = {Behavior research methods},
title = {The LMPCA program: a graphical user interface for fitting the linked-mode PARAFAC-PCA model to coupled real-valued data},
abstract = {In behavioral research, PARAFAC analysis, a three-mode generalization of standard principal component analysis (PCA), is often used to disclose the structure of three-way three-mode data. To get insight into the underlying mechanisms, one often wants to relate the component matrices resulting from such a PARAFAC analysis to external (two-way two-mode) information, regarding one of the modes of the three-way data. To this end, linked-mode PARAFAC-PCA analysis can be used, in which the three-way and the two-way data set, which have one mode in common, are simultaneously analyzed. More specifically, a PARAFAC and a PCA model are fitted to the three-way and the two-way data, respectively, restricting the component matrix for the common mode to be equal in both models. Until now, however, no software program has been publicly available to perform such an analysis. Therefore, in this article, the LMPCA program, a free and easy-to-use MATLAB graphical user interface, is presented to perform a linked-mode PARAFAC-PCA analysis. The LMPCA software can be obtained from the authors at http://ppw.kuleuven.be/okp/software/LMPCA. For users who do not have access to MATLAB, a stand-alone version is provided.},
affiliation = {University of Leuven, Leuven, Belgium. tom.wilderjans@psy.kuleuven.be},
number = {4},
pages = {1073--82},
volume = {41},
year = {2009},
month = {Nov},
language = {eng},
keywords = {Humans, Principal Component Analysis, Algorithms, User-Computer Interface, Reference Standards, Models: Statistical, Software},
date-added = {2010-05-11 17:20:41 +0200},
date-modified = {2010-07-29 19:18:35 +0200},
doi = {10.3758/BRM.41.4.1073},
pii = {41/4/1073},
pmid = {19897815},
local-url = {file://localhost/Users/chl/Dropbox/Papers/Wilderjans-2009-Behavior%20research%20methods_The%20LMPCA%20program%20a.pdf},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p11606},
rating = {0}
}

@article{Morton-Williams:1979,
author = {J Morton-Williams},
journal = {Quality and Quantity},
title = {The use of `verbal interaction coding' for evaluating a questionnaire},
pages = {59--75},
volume = {13},
year = {1979},
date-added = {2010-01-03 19:34:17 +0100},
date-modified = {2010-01-03 19:34:18 +0100},
uri = {papers://58407365-8DEB-4C7D-995B-6322E39C7022/Paper/p951},
rating = {0}
}

@article{Cesari:2008p14178,
author = {Matteo Cesari and Graziano Onder and Valentina Zamboni and Todd Manini and Ronald I Shorr and Andrea Russo and Roberto Bernabei and Marco Pahor and Francesco Landi},
journal = {BMC Geriatr},
title = {Physical function and self-rated health status as predictors of mortality: results from longitudinal analysis in the ilSIRENTE study},
abstract = {BACKGROUND: Physical function measures have been shown to predict negative health-related events in older persons, including mortality. These markers of functioning may interact with the self-rated health (SRH) in the prediction of events. Aim of the present study is to compare the predictive value for mortality of measures of physical function and SRH status, and test their possible interactions. METHODS: Data are from 335 older persons aged >or= 80 years (mean age 85.6 years) enrolled in the "Invecchiamento e Longevit{\`a}

license: MIT

license_type: permissive

branch_name: refs/heads/master

extension: bib