0 0.5 1 1.5+ All studies 28% 76 263,496 Improvement, Studies, Patients Relative Risk Mortality 32% 55 196,283 Ventilation 27% 11 54,891 ICU admission 16% 9 83,100 Hospitalization 18% 20 85,983 Cases 3% 7 70,125 Viral clearance 1% 1 418 RCTs 45% 3 1,411 RCT mortality 45% 3 1,411 Peer-reviewed 27% 70 231,984 Prophylaxis 26% 69 235,067 Early 58% 3 27,730 Late 73% 4 699 Metformin for COVID-19 c19early.org October 2023 after exclusions Favorsmetformin Favorscontrol