Assessment of Posttraumatic Stress Disorder in Adults With Severe or Moderate Intellectual Disability Using the Diagnostic Interview Trauma and Stressors-Severe Intellectual Disability.

The sample was limited to Dutch adults living in residential ID facilities, so the findings may not apply to children, community settings, or other cultures. No self-report data were collected, so the results depend on relatives and professional caregivers. Relatives and professional caregivers often disagreed on PTSD classification, even though overall outcomes did not significantly differ. Questionnaire data were substantially missing, although imputation and sensitivity analyses suggested the results were not meaningfully changed. Co-occurring conditions such as autism, epilepsy, Down syndrome, or visual impairment were not analysed as factors that might change trauma expression. The study evaluated an assessment interview, not a treatment, so it cannot show that any intervention helps PTSD in this population.

Do not treat the 20% PTSD classification as a confirmed diagnosis. The interview showed good to excellent agreement between raters, but relatives and professional caregivers often disagreed, and meeting symptom criteria was not significantly associated with major traumatic events.