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HCQ study #107 of 260
8/3 Late treatment study
Berenguer et al., Clinical Microbiology and Infection, doi:10.1016/j.cmi.2020.07.024 (Peer Reviewed)
Characteristics and predictors of death among 4035 consecutively hospitalized patients with COVID-19 in Spain
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Retrospective 4035 hospitalized patients in Spain showing reduced mortality with HCQ (data is in the supplementary appendix).

Berenguer et al., 8/3/2020, retrospective, Spain, Europe, peer-reviewed, 8 authors.
risk of death, 61.9% lower, RR 0.38, p < 0.001, treatment 681 of 2618 (26.0%), control 939 of 1377 (68.2%).

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.
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