Assessing Posttraumatic Stress Disorder in Adults with Mild Intellectual Disabilities or Borderline Intellectual Functioning |
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Authors: | Liesbeth Mevissen Robert Didden Ad de Jongh Hubert Korzilius |
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Institution: | 1. Trajectum, Zwolle, The Netherlandslmevissen@trajectum.info;3. Trajectum, Zwolle, The Netherlands;4. Behavioural Science Institute (BSI), Radboud University, Nijmegen, The Netherlands;5. Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands;6. Research Department PSYTREC, Bilthoven, The Netherlands;7. School of Health Sciences, Salford University, Manchester, UK;8. Institute of Health and Society, University of Worcester, Worcester, UK;9. School of Psychology, Queen’s University, Belfast, Northern Ireland https://orcid.org/0000-0001-6031-9708;10. Institute for Management Research, Radboud University, Nijmegen, The Netherlands |
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Abstract: | ABSTRACTIntroduction: Persons with mild intellectual disability or borderline intellectual functioning (MID-BIF, IQ 50–85) are at high risk for the development of posttraumatic stress disorder (PTSD). A diagnostic instrument to establish a valid and reliable DSM-5 PTSD diagnosis in adults with MID-BIF was lacking. Aim of the current study was to determine the reliability and validity of the Adapted ADIS-C PTSD-adults for the assessment of PTSD according to DSM-IV-TR and DSM-5 in adults with MID-BIFMethod: 106 adults (18– 72 years old) with MID-BIF were interviewed using the Adapted ADIS-C PTSD-adultsResults: Agreement between raters appeared to be good (mean Cohen’s kappa for traumatic event scores 0.84, fulfillment of PTSD A-criterion 0.50, and PTSD symptom scores 0.90). Content validity was supported by a significant positive association with scores on the IES-IDs, a DSM-IV PTSD screening instrument (DSM-IV: r = .58; DSM-5: r = .43; ps <.001). Convergent validity appeared to be good considering positive correlations between rates of PTSD symptoms and scores on the ADESS, measuring symptoms of anxiety and stress, depression, and social avoidance (DSM-IV: r = .47; DSM-5: r = .49; ps <.001)Conclusion: The Adapted ADIS-C PTSD-adults is suitable for assessing DSM-5 PTSD in adults with MID-BIF, an important step to gain access to trauma-focused interventions that have shown to be applicable and potentially effective for this high-risk target group. |
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Keywords: | PTSD trauma adults intellectual disabilities assessment |
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