High users of emergency departments in Quebec among patients with both schizophrenia and a substance use disorder

Psychiatr Serv. 2014 Nov 1;65(11):1389-91. doi: 10.1176/appi.ps.201300474. Epub 2014 Oct 31.


Objective: The study assessed factors associated over time with high use of emergency departments by patients in Quebec who had schizophrenia and a co-occurring substance use disorder.

Methods: The cohort study included 2,921 patients who received a diagnosis of schizophrenia in 2006 and had at least one emergency department visit during fiscal year 2006-2007. Generalized estimating equations were used to estimate predictors of high use of emergency departments over time.

Results: After adjustment for all covariates, predictors of high use over time were as follows: living in either a university medical region (OR=2.10) or a peripheral medical region (OR=2.10), frequent hospitalization (OR=1.16), and greater number of psychiatric (OR=1.64) or physical comorbidities (OR=1.23).

Conclusions: Because high use of emergency departments is a strong indicator of poor care continuity, identified associated factors could help develop and offer new programs to be deployed in the community to better support these patients with greater needs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Cohort Studies
  • Cross-Sectional Studies
  • Diagnosis, Dual (Psychiatry)
  • Emergency Service, Hospital / statistics & numerical data*
  • Female
  • Humans
  • Male
  • Medical Records
  • Middle Aged
  • Quebec / epidemiology
  • Schizophrenia / epidemiology*
  • Substance-Related Disorders / epidemiology*
  • Young Adult