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HCQ study #13 of 230
4/15 Early, Late
Esper et al., Prevent Senior Institute, São Paulo, Brazil (Preprint)
Empirical treatment with hydroxychloroquine and azithromycin for suspected cases of COVID-19 followed-up by telemedicine
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636 patients. HCQ+AZ reduced hospitalization 79% when used within 7 days (65% overall). Non-randomized.

Esper et al., 4/15/2020, prospective, Brazil, South America, preprint, 15 authors, dosage 800mg day 1, 400mg days 2-7.
risk of hospitalization, 64.0% lower, RR 0.36, p = 0.02, treatment 8 of 412 (1.9%), control 12 of 224 (5.4%).
Details of all 230 studies    Meta analysis
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