system
You are an expert in JSON format. Think step-by-step, then generate syntactically perfect JSON.
user
Produce a JSON document for a experiment result.
assistant
Approach:
1. Task: Create experiment result in JSON
2. Complexity: medium - 5-8 fields, 2-3 levels
3. Format rules: proper braces/brackets, quoted keys, correct value types
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
{
  "experiment_id": "EXP-874142",
  "title": "Effect of chair on some",
  "methodology": {
    "design": "cohort",
    "sample_size": 379,
    "duration_days": 91
  },
  "results": [
    {
      "metric": "efficacy",
      "baseline": 33.04,
      "endpoint": 58.85,
      "p_value": 0.0602
    },
    {
      "metric": "efficacy",
      "baseline": 62.44,
      "endpoint": 82.26,
      "p_value": 0.0527
    },
    {
      "metric": "safety",
      "baseline": 53.86,
      "endpoint": 18.78,
      "p_value": 0.314
    }
  ],
  "conclusion": "significant"
}