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Comment & Response
July 2017

Limitations Concerning the Association of Physician Sex and Patient Outcomes

Author Affiliations
  • 1RAND Corporation, Boston, Massachusetts
  • 2Division of General Internal Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
  • 3Department of Medicine, Harvard Medical School, Boston, Massachusetts
  • 4Division of General Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
  • 5Division of Hematology/Oncology, Oregon Health & Science University, Portland
JAMA Intern Med. 2017;177(7):1058. doi:10.1001/jamainternmed.2017.2142

To the Editor In their Original Investigation in a recent issue of JAMA Internal Medicine, Tsugawa and colleagues1 report that being treated by female rather than male internists is associated with lower 30-day mortality rates among hospitalized Medicare beneficiaries. Whether this association represents causation or residual confounding is unclear. The authors can perform 2 tests to help clarify the matter.

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