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0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Case 11% Improvement Relative Risk c19hcq.com/rao.html Favors HCQ Favors control
4 December 2021 - Pre-Exposure Prophylaxis study (treated before exposed to the virus)
Hydroxychloroquine as pre-exposure prophylaxis against COVID-19 infection among healthcare workers: a prospective cohort study
Rao et al., Expert Review of Anti-infective Therapy, doi:10.1080/14787210.2022.2015326 (Peer Reviewed)
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Prospective PrEP study with low risk healthcare workers in India showing RR=0.89 [0.53-1.52]. There were no significant adverse effects. Only mean age and gender distribution are provided for baseline characteristics, no severity information is provided, and no adjustments were made. Authors analyze HCQ use for <8 vs. ≥8 weeks, noting a lack of statistical significance, but not providing the results.
risk of case, 11.0% lower, RR 0.89, p = 0.68, treatment 16 of 273 (5.9%), control 67 of 1,021 (6.6%), NNT 143.
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 minimal group details.
Rao et al., 12/4/2021, prospective, India, South Asia, peer-reviewed, 8 authors.
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