title: [Prevalence and comorbidity of somatoform disorder in psychosomatic inpatients: a multicentre study].
abstract: OBJECTIVE
  This epidemiological multicenter study investigates the prevalence and comorbidity of somatoform disorder in psychosomatic inpatients.
  
  
  METHODS
  Twenty psychosomatic hospitals collected the diagnoses of all treated patients in the years 1998 to 2007. The data were analysed at the "Institute for Quality Assurance in Psychotherapy and Psychosomatic Medicine" (IQP),Munich.
  
  
  RESULTS
  Of the 100,607 patients surveyed, 18,492 (18.4 %) fulfilled the ICD-10 criteria for a somatoform disorder. 91.9 % of patients with somatoform disorder have at least one, on average 2.8 additional psychiatric disorders. The mean duration of the symptoms before current treatment was 62.6 months.
  
  
  CONCLUSIONS
  The prevalence of somatoform disorder in psychosomatic inpatients is comparable to that found in data from internal or general medicine patients. However, there are major differences in the distribution of the diagnostic subgroups of somatoform disorder.
authors.affiliation: Universitätsstraße 84, 93053 Regensburg. christoph.pieh@medbo.de
authors.forename: Christoph
authors.initials: C
authors.lastname: Pieh
authors.forename: Claas
authors.initials: C
authors.lastname: Lahmann
authors.forename: Friedrich V
authors.initials: FV
authors.lastname: Heymann
authors.forename: Karin
authors.initials: K
authors.lastname: Tritt
authors.forename: Thomas
authors.initials: T
authors.lastname: Loew
authors.forename: Volker
authors.initials: V
authors.lastname: Busch
authors.forename: Thomas
authors.initials: T
authors.lastname: Probst
mesh_terms: D000328:Adult; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D005858:Germany; D006306:Health Surveys; D006785:Hospitals, University / Q000706:statistics & numerical data; D006801:Humans; D038801:International Classification of Diseases; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis / Q000453:epidemiology*; D008875:Middle Aged; D010343:Patient Admission / Q000706:statistics & numerical data; D011602:Psychophysiologic Disorders / Q000175:diagnosis / Q000453:epidemiology*; D013001:Somatoform Disorders / Q000175:diagnosis / Q000453:epidemiology*