BMJ : British medical journal
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To examine the association between income inequality and the risk of mortality and readmission within 30 days of hospitalization. ⋯ Among patients hospitalized with acute myocardial infarction, heart failure, and pneumonia, exposure to higher levels of income inequality was associated with increased risk of readmission but not mortality. In view of the observational design of the study, these findings could be biased, owing to residual confounding.