system
You are an expert in XML format. Think step-by-step, then generate syntactically perfect XML.
user
Produce a XML document for a experiment result.
assistant
Approach:
1. Task: Create experiment result in XML
2. Complexity: complex - 8-10 fields, 3-4 levels
3. Format rules: well-formed tags, proper nesting, escaped special chars
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
<?xml version="1.0" encoding="UTF-8"?>
<experiment_result>
<experiment_id>EXP-856861</experiment_id>
<title>Effect of human on mind</title>
<methodology>
<design>RCT</design>
<sample_size>440</sample_size>
<duration_days>225</duration_days>
</methodology>
<results>
<metric>safety</metric>
<baseline>28.11</baseline>
<endpoint>88.5</endpoint>
<p_value>0.1314</p_value>
</results>
<results>
<metric>safety</metric>
<baseline>62.09</baseline>
<endpoint>65.7</endpoint>
<p_value>0.14</p_value>
</results>
<results>
<metric>safety</metric>
<baseline>60.49</baseline>
<endpoint>33.68</endpoint>
<p_value>0.2083</p_value>
</results>
<results>
<metric>efficacy</metric>
<baseline>78.01</baseline>
<endpoint>33.1</endpoint>
<p_value>0.3496</p_value>
</results>
<conclusion>significant</conclusion>
</experiment_result>