Healthcare worker here. Sheriffofsodium did a great video poking holes at this study: https://youtu.be/JKS9Y-nCnKs?si=VPsUNSoepltbg4Hu
It's 45 minutes so I don't expect people to watch it, but he makes several important points, including:
- This study was performed by USMLE insiders, the only ones with access to this private data. USMLE does not share this data publicly so it's impossible to verify.
- As the USMLE makes millions of dollars from these exams, they have a clear conflict of interest.
- The differences in patient outcome are AT BEST of marginal clinical significance, which the authors of the study even state in the paper.
There is better scientific evidence that female surgeons have better patient outcomes on average: https://pubmed.ncbi.nlm.nih.gov/37647075/