Predicting who dies depends on how severity is measured: implications for evaluating patient outcomes.


OBJECTIVE To determine whether assessments of illness severity, defined as risk for in-hospital death, varied across four severity measures. DESIGN Retrospective cohort study. SETTING 100 hospitals using the MedisGroups severity measure. PATIENTS 11 880 adults managed medically for acute myocardial infarction; 1574 in-hospital deaths (13.2… (More)


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