title: Prevalence of dual diagnosis among clinic attending patients in a de-addiction centre of a tertiary care hospital.
abstract: OBJECTIVE
  Indian research on dual diagnosis is mostly on prevalence of co-morbidity in a particular type of substance use disorder or psychiatric disorder. They were not on overall prevalence of dual diagnosis in a clinical sample. The study aims to assess prevalence of dual diagnosis among first time visitors to a tertiary care deaddiction centre.
  
  
  METHODS
  The study participants were recruited using computer-generated random number table from 10th Apr 2013 to 28 June 2013 from a deaddiction centre in North India. Psychiatric diagnosis was done by qualified psychiatrist and confirmed by Mini International Neuropsychiatric Interview (M.I.N.I.).
  
  
  RESULTS
  One seventy nine participants were recruited during the study period. The prevalence of dual diagnosis was 58 (32.4%). Affective disorder group 22 (12.3%) is the most common group followed by anxiety disorders group 20 (11.2%) and psychotic disorder group 9 (5.0%). Duration of use and dependence (in months) of alcohol, opioids, and nicotine was shorter and of cannabis and benzodiazepines was longer in dual diagnosis group compared to non dual diagnosis group.
  
  
  CONCLUSIONS
  This study screened the largest number of substance use disorders patients visiting a tertiary care centre in India using a sound methodology. The study reported that nearly one third of substance use disorder patients are cases of dual diagnosis. The prevalence reported in our study is lower than reported in some western hospital based and community based studies.
authors.affiliation: Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India. Electronic address: drsubodhbn2002@gmail.com.
authors.forename: Bhagyalakshmi Nanjayya
authors.initials: BN
authors.lastname: Subodh
authors.affiliation: Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
authors.forename: Nandita
authors.initials: N
authors.lastname: Hazari
authors.affiliation: Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
authors.forename: Deeksha
authors.initials: D
authors.lastname: Elwadhi
authors.affiliation: Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
authors.forename: Debasish
authors.initials: D
authors.lastname: Basu
mesh_terms: D000293:Adolescent; D000328:Adult; D001008:Anxiety Disorders / Q000453:epidemiology*; D015897:Comorbidity; D017831:Diagnosis, Dual (Psychiatry) / Q000706:statistics & numerical data; D006801:Humans; D007194:India / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D019964:Mood Disorders / Q000453:epidemiology*; D010045:Outpatients; D015995:Prevalence; D011618:Psychotic Disorders / Q000453:epidemiology*; D019966:Substance-Related Disorders / Q000453:epidemiology*; D062606:Tertiary Care Centers / Q000706:statistics & numerical data; D055815:Young Adult
keywords: Affective disorders; Alcohol; Dual diagnosis; Opioids; Psychosis