You should immediately be suspect of any “study” that random ass just throws half the people out of it. It’s clear that this was a “fudge the numbers” scenario
I have several issues with that study, starting with the fact that they left out 63% of the participants for no clear reason, which is even more damning given the fact that the cohort controlled by the authors themselves. Furthermore, their positive results are based on 280 individuals, not the initial sample.
https://jamanetwork.com/journals/jama/fullarticle/2801827
https://www.nejm.org/doi/full/10.1056/nejmoa2115869
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9308124/
In fact, I cannot find a double blind that supports the use of ivermectin to treat Covid.