title: Frequency of personality disorders in two age cohorts of psychiatric inpatients.
abstract: OBJECTIVE
  The authors examined the frequency of DSM-III-R personality disorders in adolescent and young adult psychiatric inpatients.
  
  
  METHODS
  Structured diagnostic interviews were reliably performed with a series of 255 consecutively admitted inpatients (138 adolescents and 117 young adults).
  
  
  RESULTS
  Most personality disorders were diagnosed in similar frequencies in the two study groups. Passive-aggressive personality disorder was diagnosed with lower frequency and dependent personality disorder with higher frequency in the young adult than in the adolescent group.
  
  
  CONCLUSIONS
  The isomorphism of relative frequencies among psychiatric inpatients suggests that what is seen in adolescents are valid forms of most adult personality disorders.
authors.affiliation: Yale Psychiatric Institute, New Haven, CT 06520, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Grilo
authors.forename: T H
authors.initials: TH
authors.lastname: McGlashan
authors.forename: D M
authors.initials: DM
authors.lastname: Quinlan
authors.forename: M L
authors.initials: ML
authors.lastname: Walker
authors.forename: D
authors.initials: D
authors.lastname: Greenfeld
authors.forename: W S
authors.initials: WS
authors.lastname: Edell
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D015897:Comorbidity; D003859:Dependent Personality Disorder / Q000175:diagnosis / Q000453:epidemiology; D005260:Female; D006760:Hospitalization; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D010324:Passive-Aggressive Personality Disorder / Q000175:diagnosis / Q000453:epidemiology; D010554:Personality Disorders / Q000175:diagnosis / Q000453:epidemiology*; D015995:Prevalence; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data