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Differences in Health Care Utilization in the Year Before Suicide Death: A Population-Based Case-Control Study

      Abstract

      Objective

      To compare health care usage between suicide decedents and living controls in the year before suicide in a large representative US population.

      Patients and Methods

      Cases (n=1221) and controls (n=3663) belonged to an integrated health care system from January 1, 2009, through December 31, 2014. Cases and controls were matched for age and sex in a 1:3 ratio, with diagnostic and/or billing codes used to enumerate and classify health care visits in the year before the index suicide. Matched analysis via conditional logistic regression related odds of suicide to visit type. A generalized estimating equation model was used to compare timing and frequency of visits between cases and controls.

      Results

      In the year before death, cases had an increased odds of both inpatient hospitalizations and emergency department nonmental health visits (odds ratio [OR], 1.55; 95% CI, 1.27-1.88; P<.001 and OR, 1.42; 95% CI, 1.26-1.60; P<.001) but not outpatient nonmental health visits (OR, 1.00; 95% CI, 0.99-1.01; P=.63). Decedents increased health care utilization closer to suicide death and had significantly more health care visits than did controls 3 months before suicide (6 vs 2; P=.01) but not 9 to 12 months before suicide (4 vs 2; P=.07). At all time points, cases used more mental health care services than did controls.

      Conclusion

      Compared with controls, suicide decedents had emergency department visits and more inpatient hospitalizations, both mental health and nonmental health related. As death approached, cases' frequency of health care usage increased. The only category in which cases and controls did not differ was in the frequency of outpatient nonmental health visits.

      Abbreviations and Acronyms:

      ED (emergency department), EMR (electronic medical record), ICD-9 (International Classification of Diseases, Ninth Revision), ICD-10 (International Classification of Diseases, Tenth Revision), OR (odds ratio)
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      Linked Article

      • In the Limelight: October 2019
        Mayo Clinic ProceedingsVol. 94Issue 10
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