Mortality in an Italian nursing home during COVID-19 pandemic: correlation with gender, age, ADL, vitamin D supplementation, and limitations of the diagnostic tests
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.