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0 0.5 1 1.5 2+ Case 67% Improvement Relative Risk c19hcq.org Chatterjee et al. HCQ for COVID-19 PrEP Is pre-exposure prophylaxis with HCQ beneficial for COVID-19? Retrospective 455 patients in India Fewer cases with HCQ (p=0.001) Chatterjee et al., Indian J. Med. Res., June 20,.., doi:10.4103/ijmr.IJMR_2234_20 Favors HCQ Favors control
Healthcare workers & SARS-CoV-2 infection in India: A case-control investigation in the time of COVID-19
Chatterjee et al., Indian J. Med. Res., June 20, 2020, doi:10.4103/ijmr.IJMR_2234_20
Chatterjee et al., Healthcare workers & SARS-CoV-2 infection in India: A case-control investigation in the time of COVID-19, Indian J. Med. Res., June 20, 2020, doi:10.4103/ijmr.IJMR_2234_20
May 2020   Source   PDF  
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4+ doses of HCQ associated with a significant decline in the odds of getting infected, dose-response relationship exists.
risk of case, 66.8% lower, RR 0.33, p < 0.001, treatment 12 of 68 (17.6%), control 206 of 387 (53.2%), NNT 2.8, full course vs. unused.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Chatterjee et al., 28 May 2020, retrospective, India, peer-reviewed, survey, 11 authors.
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