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0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Mortality 95% Improvement Relative Risk c19hcq.com/yegerov.html Favors HCQ Favors control
8 January 2021 - Late treatment study
Epidemiological and Clinical Characteristics, and Virologic Features of COVID-19 Patients in Kazakhstan: a Nation-Wide, Retrospective, Cohort Study
Yegerov et al., medRxiv, doi:10.1101/2021.01.06.20249091 (Preprint)
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Retrospective 1,072 hospitalized patients in Kazakhstan showing no mortality for HCQ treated patients, however only 23 patients received treatment - this result is not statistically significant.
risk of death, 95.3% lower, RR 0.05, p = 1.00, treatment 0 of 23 (0.0%), control 20 of 1,049 (1.9%), NNT 52, relative risk is not 0 because of continuity correction due to zero events (with reciprocal of the contrasting arm).
Effect extraction follows pre-specified rules prioritizing more serious outcomes.
This study is excluded in the after exclusion results of meta analysis: unadjusted results with no group details.
Yegerov et al., 1/8/2021, retrospective, Kazakhstan, Asia, preprint, 8 authors.
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