Acknowledging the role of patient heterogeneity in hospital outcome reporting : Mortality after acute myocardial infarction in five European countries
BACKGROUND: Hospital performance, presented as the comparison of average measurements, dismisses that hospital outcomes may vary across types of patients. We aim at drawing out the relevance of accounting for patient heterogeneity when reporting on hospital performance.METHODS: An observational study on administrative data from virtually all 2009 hospital admissions for Acute Myocardial Infarction