Regardless of the ethical framework and conduct of the research, about which I know little, as long at the statistical fact gathering was not selective, and all the facts were included, proven and published, then the conclusion is admissable. .
There was an interesting section on Woman's Hour today about the convicted Dutch child rape competitor and whether he should have been allowed to compete at all. Netherlands law on rape has sentences from 21 days up to years, depending on the circumstances surrounding the offence. I knew nothing about the background to the case, and didn't hear all of it, so not volunteering an opinion but the female boxers expected to fight Taiwanese trans men boxers left me feeling that there's not a fair playing field.