The length of hospital stay in COVID-19 patients using pre-hospital metformin at a Saudi tertiary hospital: a retrospective cohort study.

Event rates for mechanical ventilation, ICU admission, acute cardiac events, severe respiratory failure, ARDS, and secondary infection were consistently lower in the metformin group compared with the non-metformin group; however, these differences did not reach statistical significance (all p-values > 0.05).

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