• Alexander B Blum, Natalia N Egorova, Eugene A Sosunov, Annetine C Gelijns, Erin DuPree, Alan J Moskowitz, Alex D Federman, Deborah D Ascheim, and Salomeh Keyhani.
• From the Office of Behavioral and Social Sciences Research, National Institutes of Health, Bethesda, MD (A.B.B.); Departments of Health Evidence & Policy (A.B.B., N.N.E., A.C.G., E.D., A.J.M., D.D.A.) and Division of General Internal Medicine (A.D.F., A.J.M.), Mount Sinai School of Medicine, New York, NY; and Division of General Internal Medicine, University of California at San Francisco and the San Francisco VA, San Francisco, CA (S.K.). abb@evergreenmd.org.
• Circ Cardiovasc Qual. 2014 May 1;7(3):391-7.

BackgroundCurrent 30-day readmission models used by the Center for Medicare and Medicaid Services for the purpose of hospital-level comparisons lack measures of socioeconomic status (SES). We examined whether the inclusion of an SES measure in 30-day congestive heart failure readmission models changed hospital risk-standardized readmission rates in New York City (NYC) hospitals.Methods And ResultsUsing a Centers for Medicare & Medicaid Services (CMS)-like model, we estimated 30-day hospital-level risk-standardized readmission rates by adjusting for age, sex, and comorbid conditions. Next, we examined how hospital risk-standardized readmission rates changed relative to the NYC mean with inclusion of the Agency for Healthcare Research and Quality (AHRQ)-validated SES index score. In a secondary analysis, we examined whether inclusion of the AHRQ SES index score in 30-day readmission models disproportionately impacted the risk-standardized readmission rates of minority-serving hospitals. Higher AHRQ SES scores, indicators of higher SES, were associated with lower odds (0.99) of 30-day readmission (P<0.019). The addition of the AHRQ SES index did not change the model's C statistic (0.63). After adjustment for the AHRQ SES index, 1 hospital changed status from worse than the NYC average to no different than the NYC average. After adjustment for the AHRQ SES index, 1 NYC minority-serving hospital was reclassified from worse to no different than average.ConclusionsAlthough patients with higher SES were less likely to be admitted, the impact of SES on readmission was small. In NYC, inclusion of the AHRQ SES score in a CMS-based model did not impact hospital-level profiling based on 30-day readmission.© 2014 American Heart Association, Inc.

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