Abstract
Background The emergence of specialty hospitals focusing on narrow procedural areas has generated controversy, although little is known about their quality. Methods We conducted a retrospective cohort study of 42,737 Medicare beneficiaries who underwent percutaneous coronary intervention (PCI) and 26,274 who underwent coronary-artery bypass grafting (CABG) during 2000 and 2001 in specialty cardiac hospitals (15 for PCI and 15 for CABG) and general hospitals (82 for PCI and 75 for CABG) in the same markets. Administrative data were used to compare patients' characteristics, hospital procedural volumes, and patient outcomes. Results Patients undergoing PCI or CABG in specialty hospitals were less likely to have coexisting conditions than those being treated at general hospitals and were less likely to have had an acute myocardial infarction (P<0.001). The better health of the patients at specialty hospitals than of those at general hospitals was reflected by the lower mean predicted risk of death (2.1 perce...
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