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Substance use disorders and risk of suicide in a general US population: a case control study

Authors
  • Lynch, Frances L.1
  • Peterson, Edward L.2
  • Lu, Christine Y.3, 4
  • Hu, Yong5
  • Rossom, Rebecca C.6
  • Waitzfelder, Beth E.7
  • Owen-Smith, Ashli A.8, 9
  • Hubley, Samuel10
  • Prabhakar, Deepak2
  • Keoki Williams, L.5, 2
  • Beck, Arne11
  • Simon, Gregory E.12
  • Ahmedani, Brian K.5, 2
  • 1 Kaiser Permanente Northwest, Center for Health Research, 3800 N Interstate Ave., Portland, OR, 97227-1110, USA , Portland (United States)
  • 2 Henry Ford Health System, Detroit, USA , Detroit (United States)
  • 3 Harvard Medical School, Boston, USA , Boston (United States)
  • 4 Harvard Pilgrim Health System, Boston, USA , Boston (United States)
  • 5 Henry Ford Health System, 1 Ford Place, Suite 3A, Detroit, MI, 48116, USA , Detroit (United States)
  • 6 HealthPartners, Institute for Education and Research, 8170 33rd Ave. South, Bloomington, MN, 55425, USA , Bloomington (United States)
  • 7 Kaiser Permanente Hawaii, Center for Health Research, 501 Alakawa Street, Suite 201, Honolulu, HI, 96817, USA , Honolulu (United States)
  • 8 Georgia State University, Urban Life Building, 140 Decatur St. Suite 434, Atlanta, GA, 30303, USA , Atlanta (United States)
  • 9 Kaiser Permanente Georgia, Center for Clinical and Outcomes Research, Portland, USA , Portland (United States)
  • 10 University of Colorado, Denver, 3055 Roslyn Street, #100, Denver, CO, 80238, USA , Denver (United States)
  • 11 Kaiser Permanente Colorado, Institute for Health Research, 2550 S. Parker Rd, Suite 200, Aurora, CO, 80014, USA , Aurora (United States)
  • 12 Kaiser Permanente Washington, Health Research Institute, 1730 Minor Ave, Suite 1600, Seattle, WA, 98101-1466, USA , Seattle (United States)
Type
Published Article
Journal
Addiction Science & Clinical Practice
Publisher
BioMed Central
Publication Date
Feb 21, 2020
Volume
15
Issue
1
Identifiers
DOI: 10.1186/s13722-020-0181-1
Source
Springer Nature
Keywords
License
Green

Abstract

BackgroundPrior research suggests that substance use disorders (SUDs) are associated with risk of suicide mortality, but most previous work has been conducted among Veterans Health Administration patients. Few studies have examined the relationship between SUDs and suicide mortality in general populations. Our study estimates the association of SUDs with suicide mortality in a general US population of men and women who receive care across eight integrated health systems.MethodsWe conducted a case–control study using electronic health records and claims data from eight integrated health systems of the Mental Health Research Network. Participants were 2674 men and women who died by suicide between 2000–2013 and 267,400 matched controls. The main outcome was suicide mortality, assessed using data from the health systems and confirmed by state death data systems. Demographic and diagnostic data on substance use disorders and other health conditions were obtained from each health system. First, we compared descriptive statistics for cases and controls, including age, gender, income, and education. Next, we compared the rate of each substance use disorder category for cases and controls. Finally, we used conditional logistic regression models to estimate unadjusted and adjusted odds of suicide associated with each substance use disorder category.ResultsAll categories of substance use disorders were associated with increased risk of suicide mortality. Adjusted odds ratios ranged from 2.0 (CI 1.7, 2.3) for patients with tobacco use disorder only to 11.2 (CI 8.0, 15.6) for patients with multiple alcohol, drug, and tobacco use disorders. Substance use disorders were associated with increased relative risk of suicide for both women and men across all categories, but the relative risk was more pronounced in women.ConclusionsSubstance use disorders are associated with significant risk of suicide mortality, especially for women, even after controlling for other important risk factors. Experiencing multiple substance use disorders is particularly risky. These findings suggest increased suicide risk screening and prevention efforts for individuals with substance use disorders are needed.

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