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Ivermectin study #13 of 63
9/24 Late treatment study
Khan et al., Archivos de Bronconeumología, doi:10.1016/j.arbres.2020.08.007 (Letter)
Ivermectin treatment may improve the prognosis of patients with COVID-19
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Retrospective 115 ivermectin patients and 133 control patients showing significantly lower death and faster viral clearance.
Some potential issues and the authors' response can be found in [1, 2].

Khan et al., 9/24/2020, retrospective, Bangladesh, South Asia, preprint, median age 35.0, 8 authors, dosage 12mg single dose.
risk of death, 87.0% lower, RR 0.13, p < 0.05, treatment 1 of 115 (0.9%), control 9 of 133 (6.8%).
time to viral-, 73.3% lower, relative time 0.27, p < 0.001, treatment 115, control 133.

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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