Accurate measures of outcomes are necessary to improve the quality of US health care and address geographic, socioeconomic, and racial/ethnic variations in care quality. However, 2 major initiatives that seek to improve quality—public reporting of outcomes and pay for performance (P4P)—have the potential to reduce the reliability of the administrative data on which they are often based and generate spurious estimates of performance.
Corresponding Author: Steven A. Farmer, MD, PhD, Center for Cardiovascular Innovation, Northwestern University Feinberg School of Medicine, 645 N Michigan Ave, Ste 1006, Chicago, IL 60611 (firstname.lastname@example.org).
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.