Retrospective 238 hospitalized patients in Spain showing lower mortality with HCQ, adjusted hazard ratio aHR 0.81 [0.24-2.76].
Rivera et al., 7/9/2020, retrospective, Spain, Europe, peer-reviewed, 21 authors.
risk of death, 19.0% lower, RR 0.81, p = 0.75, treatment 215, control 23.