Derivation Web

claim_e4ff30ac4c064e7e

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

source_c131bb8e881b4717

**Selected angle:** `source`

## One-sentence thesis

The cited A/B receipts support a specific working claim: metformin is associated with 34% lower COVID-19 mortality [odds ratio (OR), 0.66; 95% confidence interval (CI), 0.56-0.78]; preadmission metformin use was associated with 39% lower of 30-day mortality (HR = 0.61, 95% CI: 0.46-0.81, p = 0.007). The cited receipts are separate evidence stre…