• Jessica A Lavery, Allison Lipitz-Snyderman, Diane G Li, Peter B Bach, and Katherine S Panageas.
• Center for Health Policy and Outcomes, Memorial Sloan Kettering Cancer Center, New York, New York.
• J Eval Clin Pract. 2020 Feb 1; 26 (1): 66-71.

Rational, Aims, And ObjectivesWhile public reports of hospital-level surgical quality measures are becoming increasingly common in health care, a comprehensive national assessment of surgical quality across multiple cancer sites has yet to be developed. Fee-for-service (FFS) Medicare claims present a potential resource from which to measure outcomes following cancer surgery given the national scope of patients and providers. However, due to the administrative nature of the data, clinical cancer information such as stage is not recorded. Leveraging the Surveillance, Epidemiology, and End Results (SEER) registry linked to FFS Medicare claims to analyse outcomes for patients whom we ultimately know stage information, we determined whether Medicare claims are suitable for measuring provider quality following cancer surgery by assessing the extent to which the lack of stage information modifies assessments of provider performance.MethodsWe identified patients aged 66 and older undergoing cancer surgery between 2011 and 2013 from SEER-Medicare. We compared the changes in the risk-standardized rates (RSRs), decile rankings, and c-statistics with and without risk adjustment for cancer stage for three measures of hospital performance: 30-day mortality, surgical complications, and unplanned readmissions.ResultsThe RSR changed by at most 11.4% for mortality and by less than 4% for complications and readmissions, indicating that measures of hospital performance were stable with and without adjustment for stage. The relative performance of hospitals was also stable, as demonstrated by fewer than 20% of hospitals changing decile rank. The c-statistic declined by less than 2% across all measures, indicating that model fit was not substantially worsened without this information.ConclusionThese findings support the use of FFS Medicare claims for hospital-level analyses of short-term outcomes following cancer surgery. Quality reporting based on these analyses can be used to help patients choose among hospitals and for evaluating policies to improve surgical cancer care.© 2019 John Wiley & Sons, Ltd.

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