Science works on a pretty clear dictum in this case: you must reject the null hypothesis.
The null hypothesis for all therapeutics is that hydoxychloroquine has no efficacy for the treatment of COVID-19.
What evidence can you find that rejects the null hypothesis?
I, again, can point to large, observational trials using over 10,000 patients in each case that have been conducted all over the world. They have been published
here,
here, and
here. Every one of them failed to reject the null hyptothesis.
I have spoken at length about the limitations of observational trials, in fact, I seem to remember someone complaining about me bringing it up.
Who was that? Oh yeah:
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Regarding the rest of your post, it's hard to take it very seriously when you conflate therapeutics, which concerns the efficacy of pharmacological interventions, with epidemiology, which is about the spread and control of disease.
I'll say again: what is biased about going off the evidence as presented in these trials?