Impact of public reporting of coronary artery bypass graft surgery performance data on market share, mortality, and patient selection

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Background: The impact of publicly reporting risk-adjusted outcomes for hospitals and surgeons remains controversial, with particular concern about unintended consequences. Objectives: We evaluated the impact of 3 reports from the voluntary California CABG Mortality Reporting Program (CCMRP) on hospital market share, hospital mortality, and patient selection for coronary artery bypass graft (CABG) surgery. RESEARCH DESIGN AND PARTICIPANTS:: We analyzed data from January 2000 to December 2005 for all patients receiving isolated CABG surgery in California. We compared hospital groups based on their quality classification, including low-mortality outliers ("better"), high-mortality outliers ("worse"), and nonoutliers, as well as participation in the CCMRP. Measures: We compared changes in market share, risk-adjusted mortality, and hospital caseload of high-risk patients for isolated CABG surgeries before and after the public release of 3 CCMRP reports (July 2001, August 2003, and February 2005). Results: Low-mortality outlier hospitals experienced significantly increased market share for isolated CABG surgery in the first 6 months after the public release of the CCMRP reports (relative change in adjusted mean market share=8.9%, P=0.002). We found no evidence to suggest reduced risk adjusted mortality after the release of the CCMRP reports, but high-mortality outlier hospitals, on average, operated on less sick patients (relative change in mean expected mortality=25%, P=0.02). Conclusions: The release of public CABG hospital performance reports in California was associated with increased volume at low-mortality hospitals, and may have reduced referrals of high-risk patients to high-mortality hospitals (or risk avoidance).

Original languageEnglish (US)
Pages (from-to)1118-1125
Number of pages8
JournalMedical Care
Volume49
Issue number12
DOIs
StatePublished - Dec 2011

Keywords

  • coronary artery bypass graft surgery
  • expected mortality
  • hospital choice
  • market share
  • patient selection
  • public reporting
  • quality
  • risk-adjusted mortality

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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