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Given that many hospitalized patients return within 30 days, identifying those at greatest risk for rehospitalization would aid in targeting care-transition interventions and limiting readmissions. To assess how well validated readmission risk-prediction models work, researchers performed a systematic review of 30 studies (26 unique models) involving a variety of patient populations and clinical settings. Most studies used data from the U.S.
The studies most often focused on risk for readmission within 30 days. Variables of interest included medical diagnoses or comorbidities (24 studies), patient age (19 studies), patient sex (15 studies), prior use of medical services (14 studies), alcohol or other substance use (11 studies), mental illnes…