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0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Mortality -37% Improvement Relative Risk c19hcq.com/salazar.html Favors HCQ Favors control
4 November 2020 - Late treatment study
Significantly Decreased Mortality in a Large Cohort of Coronavirus Disease 2019 (COVID-19) Patients Transfused Early with Convalescent Plasma Containing High-Titer Anti–Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Spike Protein IgG
Salazar et al., The American Journal of Pathology, doi:10.1016/j.ajpath.2020.10.008 (Peer Reviewed)
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Convalescent plasma study also showing mortality based on HCQ treatment, unadjusted hazard ratio uHR 1.37, p = 0.28. Confounding by indication is likely.
risk of death, 37.0% higher, RR 1.37, p = 0.28, treatment 12 of 92 (13.0%), control 80 of 811 (9.9%).
Effect extraction follows pre-specified rules prioritizing more serious outcomes.
This study is excluded in the after exclusion results of meta analysis: substantial unadjusted confounding by indication likely, unadjusted results with no group details.
Salazar et al., 11/4/2020, retrospective, USA, North America, peer-reviewed, 19 authors.
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