This Medical Care article studies associations between health system type and inpatient mortality from four acute conditions. Using data for 11 states drawn from a variety of sources and a panel study design with fixed effects models, this study finds that centralized health systems are associated with lower mortality from acute myocardial infarction (AMI), congestive heart failure, and pneumonia. Meanwhile, independent hospital systems had better AMI quality outcomes than centralized physician/insurance and moderately-centralized health systems, and there was no difference in stroke mortality among the health system types studied. The study concludes that hospital system type is associated with care quality.
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