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HCQ study #125 of 320   Meta Analysis
8/24 Late treatment study
Catteau et al., Int. J. Antimicrobial Agents, doi:10.1016/j.ijantimicag.2020.106144 (Peer Reviewed)
Low-dose Hydroxychloroquine Therapy and Mortality in Hospitalized Patients with COVID-19: A Nationwide Observational Study of 8075 Participants
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Retrospective 8,075 hospitalized patients, 4,542 low-dose HCQ, 3,533 control. 35% lower mortality for HCQ (17.7% vs. 27.1%), adjusted HR 0.68 [0.62–0.76]. Low-dose HCQ monotherapy was independently associated with lower mortality in hospitalized patients.
Patients exposed to others therapies (TCZ, AZ, LPV/RTV) were excluded.
Statistical analysis was performed by an independent group. Calendar time of prescription and immortal time bias was taken into account. Corticosteroids prescriptions was low in both groups.

Catteau et al., 8/24/2020, retrospective, database analysis, Belgium, Europe, peer-reviewed, 11 authors.
risk of death, 32.0% lower, RR 0.68, p < 0.001, treatment 804 of 4542 (17.7%), control 957 of 3533 (27.1%).

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.
All 320 studies   Meta Analysis
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