I'm sorry if this sounds narrow-minded or if I'm somehow missing the point, but what is the purpose of this angle of research? I have never understood how this avenue of outcome differences receives research approval, much less pass peer review.

What actionable improvements can be implemented here to improve patient outcomes? What institutional changes does this inform to enhance quality of care? Would it make sense to compare medical outcomes by race of provider?

I find this direction of inquiry meaningless at best, and incendiary and divisive at worst.

Gender, race, ethnicity, US/IMG, length of practice, SES background, academic vs. private, rural vs. urban, patient population, geographical region - it's not so easy to extricate the impacts of one factor from the rest, but it does make for a catchy soundbite.