Comment by Lanzaa

I think this application of Berkson's paradox is misleading. A physician can be expected to have a high medical aptitude because of training, not filtering. Medical degrees are not withheld from people with low medical aptitude and given to people with high medical aptitude, people are trained then filtered.

> So if you find a doctor with bad bedside manner, they're likely to have better medical aptitude otherwise they would've been filtered out.

I propose the opposite, a doctor with bad bedside manner likely has lower medical aptitude. I believe there is training for doctors to improve their bedside manner. Then "trainability" may be a latent factor which correlates the quality of a doctor's bedside manner and medical aptitude.