• J Hosp Med · Aug 2013

    Contribution of psychiatric illness and substance abuse to 30-day readmission risk.

    • Robert E Burke, Jacques Donzé, and Jeffrey L Schnipper.
    • Hospital Medicine Section, Department of Veterans Affairs Medical Center, Eastern Colorado Health Care System, Denver, CO 80220, USA. Robert.Burke5@va.gov
    • J Hosp Med. 2013 Aug 1; 8 (8): 450-5.

    BackgroundLittle is known about the contribution of psychiatric illness to medical 30-day readmission risk.ObjectiveTo determine the independent contribution of psychiatric illness and substance abuse to all-cause and potentially avoidable 30-day readmissions in medical patients.DesignRetrospective cohort study.SettingPatients discharged from the medicine services at a large teaching hospital from July 1, 2009 to June 30, 2010.MeasurementsThe main outcome of interest was 30-day all-cause and potentially avoidable readmissions; the latter determined by a validated algorithm (SQLape) in both bivariate and multivariate analysis. Readmissions were captured at 3 hospitals where the majority of these patients are readmitted.ResultsOf 6987 discharged patients, 1260 were readmitted within 30 days (18.0%); 388 readmissions were potentially avoidable (5.6%). In multivariate analysis, 2 or more prescribed outpatient psychiatric medications (odds ratio [OR]: 1.1, 95% confidence interval [CI]: 1.01-1.20) or any prescription of anxiolytics (OR: 1.16, 95% CI: 1.00-1.35) were associated with increased all-cause readmissions, whereas discharge diagnoses of anxiety (OR: 0.82, 95% CI: 0.68-0.99) or substance abuse (OR: 0.80, 96% CI: 0.65-0.99) were associated with fewer all-cause readmissions. These findings were not replicated as predictors of potentially avoidable readmissions; rather, patients with discharge diagnoses of depression (OR: 1.49, 95% CI: 1.09-2.04) and schizophrenia (OR: 2.63, 95% CI: 1.13-6.13) were at highest risk.ConclusionsOur data suggest that patients treated during a hospitalization for depression and for schizophrenia are at higher risk for potentially avoidable 30-day readmissions, whereas those prescribed more psychiatric medications as outpatients are at increased risk for all-cause readmissions. These populations may represent fruitful targets for interventions to reduce readmission risk.Copyright © 2013 Society of Hospital Medicine.

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