title: Psychoactive substance use diagnoses among psychiatric in-patients.
abstract: OBJECTIVE
  To estimate the prevalence and possible under-diagnosing of substance use disorders and to consider factors that might influence diagnosing of substance use disorders.
  
  
  METHODS
  Data collected from case records and PSE interviews of psychiatric in-patients from 12 psychiatric departments in Denmark admitted during October 1996 were compared with data from the Danish Psychiatric Register.
  
  
  RESULTS
  A substantially lower prevalence of substance use diagnoses were found in the register (26.1%) than in the research data (50.0%). A high prevalence of co-occurrence between substance use disorders and mental disorders other than substance use disorders was found (37.3%). In the majority of cases knowledge of the substance use disorders was present in the case records, although they had not resulted in a diagnosis.
  
  
  CONCLUSIONS
  The under-diagnosis of substance use disorders is due not only to concealed diagnostic signs and symptoms but also to an under-diagnosis by the psychiatrists, in spite of the fact that information on the substance use was accessible.
authors.affiliation: Department of Psychiatric Demography, Institute for Basic Psychiatric Research, Psychiatric Hospital in Aarhus, Risskov, Denmark.
authors.forename: S S
authors.initials: SS
authors.lastname: Hansen
authors.forename: P
authors.initials: P
authors.lastname: Munk-Jørgensen
authors.forename: B
authors.initials: B
authors.lastname: Guldbaek
authors.forename: T
authors.initials: T
authors.lastname: Solgård
authors.forename: K S
authors.initials: KS
authors.lastname: Lauszus
authors.forename: N
authors.initials: N
authors.lastname: Albrechtsen
authors.forename: L
authors.initials: L
authors.lastname: Borg
authors.forename: A
authors.initials: A
authors.lastname: Egander
authors.forename: K
authors.initials: K
authors.lastname: Faurholdt
authors.forename: A
authors.initials: A
authors.lastname: Gilberg
authors.forename: N P
authors.initials: NP
authors.lastname: Gosden
authors.forename: J
authors.initials: J
authors.lastname: Lorenzen
authors.forename: B
authors.initials: B
authors.lastname: Richelsen
authors.forename: K
authors.initials: K
authors.lastname: Weischer
authors.forename: A
authors.initials: A
authors.lastname: Bertelsen
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D017831:Diagnosis, Dual (Psychiatry); D005260:Female; D006801:Humans; D015994:Incidence; D007297:Inpatients; D008297:Male; D001523:Mental Disorders / Q000150:complications / Q000628:therapy*; D008875:Middle Aged; D012042:Registries; D012189:Retrospective Studies; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology*