COVID-19 studies:  C19 studies: C19:  IvermectinIVM Vitamin DV.D HC QHC Q Vitamin CV.C ZincZn PVP-IPVP-I FLVFLV REGNR2 LY-CoVLY RemdesivirRMD
HCQ study #222 of 260
12/22 Late treatment study
Cangiano et al., Aging, doi:10.18632/aging.202307 (Peer Reviewed)
Mortality in an Italian nursing home during COVID-19 pandemic: correlation with gender, age, ADL, vitamin D supplementation, and limitations of the diagnostic tests
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73% lower mortality with HCQ. Analysis of 98 PCR+ nursing home residents in Italy, mean age 90, showing HCQ mortality RR 0.27, p = 0.03. Subject to confounding by contraindication. The paper provides the p value for regression but not the effect size.

Cangiano et al., 12/22/2020, retrospective, Italy, Europe, peer-reviewed, 14 authors.
risk of death, 73.4% lower, RR 0.27, p = 0.03, treatment 5 of 33 (15.2%), control 37 of 65 (56.9%).

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
Details of all 260 studies    Meta analysis
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