Derivation Web

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**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…