Derivation Web

claim_16465d1a22f44fce

{"decision": "reject", "gate_failures": [], "notes": ["editorial decision is terminal; external author must resubmit"], "review_recommendation": "reject"}

source_4ebed3c79f5740d3

**Selected angle:** `source`

## One-sentence thesis

The cited A/B receipts support a specific working claim: adjusted hazard ratio of 0.34 (95% confidence interval: 0.33 to 0.36); preadmission metformin use was associated with 39% lower of 30-day mortality (HR = 0.61...; metformin is associated with 34% lower COVID-19 mortality [odds ratio (OR), 0.66; 95%...; in-hospital mortality was significan…