system
You are an expert in XML format. Think step-by-step, then generate syntactically perfect XML.
user
Create a XML representation of 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-550309</experiment_id>
<title>Effect of month on four</title>
<methodology>
<design>RCT</design>
<sample_size>169</sample_size>
<duration_days>180</duration_days>
</methodology>
<results>
<metric>safety</metric>
<baseline>21.67</baseline>
<endpoint>48.73</endpoint>
<p_value>0.0983</p_value>
</results>
<results>
<metric>safety</metric>
<baseline>85.54</baseline>
<endpoint>80.94</endpoint>
<p_value>0.1421</p_value>
</results>
<results>
<metric>efficacy</metric>
<baseline>99.69</baseline>
<endpoint>81.8</endpoint>
<p_value>0.1514</p_value>
</results>
<results>
<metric>safety</metric>
<baseline>98.77</baseline>
<endpoint>47.12</endpoint>
<p_value>0.0017</p_value>
</results>
<conclusion>significant</conclusion>
</experiment_result>