Not following your prescribed treatment (or your prescribed outcomes...) does not make it a bad study. We need to know what hydroxychloroquine does when given all on its own, too. It does have significant, known side effects. Is there a subset of patients who will be harmed or killed by giving it to them?
RE: This was a retrospective study. The study was NOT designed to treat patients with already badly damaged lungs. It wasn’t designed to replicate anything. The study was designed to look back at patients who had already been treated and see what the outcomes were.
Then how does the study square with the title of this thread? ( not mine but CNN’s ).