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Ivermectin study #29 of 63
11/13 Prophylaxis study
Elgazzar et al., Research Square, doi:10.21203/ (Preprint)
Efficacy and Safety of Ivermectin for Treatment and prophylaxis of COVID-19 Pandemic
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RCT for prophylaxis with ivermectin showing a significant reduction in cases with treatment.
Relative risk of COVID-19 case RR 0.2, p = 0.03
This paper also reports a treatment study [1].

Elgazzar et al., 11/13/2020, Randomized Controlled Trial, Egypt, Africa, preprint, 6 authors, dosage 400μg/kg weekly.
risk of COVID-19 case, 80.0% lower, RR 0.20, p = 0.03, treatment 2 of 100 (2.0%), control 10 of 100 (10.0%).

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
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