Retrospective study of the 31 onchocerciasis-endemic countries using the community-directed treatment with ivermectin (CDTI) and the 22 non-endemic countries in Africa, showing significantly lower mortality per capita in the countries using ivermectin.
Tanioka et al., 3/26/2021, retrospective, ecological study, multiple countries, Africa, preprint, 3 authors, dosage 200μg/kg, dose varied, typically 150-200μg/kg.
risk of death, 88.2% lower, RR 0.12, p = 0.002, relative mean mortality per million.
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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