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0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Case 22% Improvement Relative Risk c19hcq.com/datta.html Favors HCQ Favors control
6 November 2020 - Pre-Exposure Prophylaxis study (treated before exposed to the virus)
No Role of HCQ in COVID-19 Prophylaxis: A Survey amongst Indian Doctors
Datta et al., Journal of Vaccines & Vaccination, S6:1000002 (Peer Reviewed)
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Survey of Indian doctors not finding a significant effect of HCQ prophylaxis.
risk of case, 22.1% lower, RR 0.78, p = 0.47, treatment 16 of 146 (11.0%), control 19 of 135 (14.1%), NNT 32.
Effect extraction follows pre-specified rules prioritizing more serious outcomes.
Datta et al., 11/6/2020, retrospective, India, South Asia, peer-reviewed, 7 authors.
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