Meta analysis confirming the effectiveness of ivermectin for COVID-19, showing ivermectin treatment mortality relative risk RR 0.17 [0.18-0.35] and prophylaxis cases RR 0.12 [0.08-0.18].
Lawrie et al., 1/3/2021, preprint, 1 author.
risk of death, 83.0% lower, RR 0.17, p < 0.001, treatment 8 of 585 (1.4%), control 44 of 522 (8.4%).
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.