title: [The prevalence of psychiatric co-morbidity among opioid addicts].
abstract: OBJECTIVE
  To statistically pool prevalence estimates of all studies on co-morbid psychiatric disorders in samples of opioid addicts.
  
  
  METHODS
  16 studies were identified which comprised 3754 opioid addicts. Meta-analysis was conducted using precision weighted algorithms.
  
  
  RESULTS
  78 % of the opiate addicts had at least one co-morbid psychiatric disorder at least once in their lifetime. Especially personality disorders had a high prevalence (42 %). The second highest prevalence was found with mood disorders (31 %), the third highest prevalence was anxiety disorders with 8 %.
  
  
  CONCLUSIONS
  The high prevalence of psychiatric disorders among opioid addicts signaled the need to improve and develop better treatment programs.
authors.affiliation: Institut für Suchtforschung, Zürich, Schweiz.
authors.forename: Adrian
authors.initials: A
authors.lastname: Frei
authors.forename: Jürgen
authors.initials: J
authors.lastname: Rehm
mesh_terms: D003131:Combined Modality Therapy; D015897:Comorbidity; D017831:Diagnosis, Dual (Psychiatry); D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology* / Q000534:rehabilitation; D009293:Opioid-Related Disorders / Q000453:epidemiology* / Q000534:rehabilitation; D010554:Personality Disorders / Q000453:epidemiology / Q000534:rehabilitation; D011379:Prognosis