The prevalence of psychiatric morbidity in mentally retarded adults

Acta Psychiatr Scand. 1985 Dec;72(6):563-70. doi: 10.1111/j.1600-0447.1985.tb02655.x.


302 mentally retarded adults, sampled by epidemiological criteria, were examined with regard to handicaps, behaviour, skills and psychopathology by use of the MRC HBS-schedule and a list of psychiatric items. Based on research criteria, a computerized psychiatric diagnosis was made on a hierarchial scale. A psychiatric disorder was diagnosed in 85 (27.1%), which is a smaller prevalence rate than found in other studies. Next to behaviour disorder (10.9%), psychosis of uncertain type (5%) was the most common disorder. Dementia and early childhood autism were found equally often (3.6% each). Neurosis was seldom (2%), while schizophrenia (1.3%) and affective disorder (1.7%) occurred at about the same rates as found in similar investigations. No cases of alcohol or drug abuse were found.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Autistic Disorder / epidemiology
  • Child
  • Dementia / epidemiology
  • Denmark
  • Female
  • Humans
  • Intellectual Disability / complications*
  • Intellectual Disability / psychology
  • Male
  • Mental Disorders / diagnosis
  • Mental Disorders / epidemiology*
  • Mental Disorders / psychology
  • Middle Aged
  • Mood Disorders / epidemiology
  • Neurotic Disorders / epidemiology
  • Psychiatric Status Rating Scales
  • Psychotic Disorders / epidemiology
  • Schizophrenia / epidemiology