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Table 2 All-cause mortality, acute care use and treatment retention in patient groups

From: A cohort study evaluating the association between concurrent mental disorders, mortality, morbidity, and continuous treatment retention for patients in opioid agonist treatment (OAT) across Ontario, Canada, using administrative health data

  Patients, N Outcome Effect 95% CI
All-cause mortality n (%)
 Mental disorders 48,679 2485 (5.1) OR 1.4 1.2–1.5
 +No mental disorders 7245 227 (3.1)   
ED visits Mean (SD)
 Mental disorders 48,679 22.0 (30.9) IRR 2.3 2.2–2.3
 +No mental disorders 7245 9.8 (10.2)   
Hospitalizations Mean (SD)
 Mental disorders 48,679 5.0 (6.8) IRR 1.1 1.6–1.7
 +No mental disorders 7245 3.0 (6.8)   
*One-year treatment retention n (%)
 Mental disorders 23,268 8758 (37.6) HR 1.0 0.9–1.1
 +No mental disorders 2,532 903 (35.7)   
  1. SD standard deviation, OR adjusted odds ratio, IRR incidence rate ratio, HR adjust hazard ratio
  2. + Reference group
  3. *Ontario Drug Benefit Plan subgroup analysis (n = 28,500)