Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities

Langdon, Peter E. ORCID: https://orcid.org/0000-0002-7745-1825, Bisson, Jonathan I., Rogers, Gemma, Swain, Sophie, Hiles, Steve, Watkins, Alan and Willner, Paul (2023) Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities. British Journal of Clinical Psychology, 62 (2). pp. 471-482. ISSN 0144-6657

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Abstract

Aims: The International Trauma Questionnaire (ITQ) is a novel assessment instrument that is aligned to the ICD-11 diagnoses of post-traumatic stress disorder (PTSD) and complex PTSD (CPTSD). The purpose of this study was to develop and evaluate an adapted version of the ITQ suitable for use by people with intellectual disabilities. Methods: The ITQ-ID follows the original ITQ, using wording developed in collaboration with a focus group of people with intellectual disabilities The ITQ-ID was administered to 40 people with intellectual disabilities recruited from learning disability forensic and community settings, alongside a Trauma Information Form and the Impact of Event Scale-Intellectual Disabilities (IES-IDs). Results: Most participants reported multiple traumatizing events. Around half of the participants met strict criteria for a diagnosis of PTSD, and around three quarters met looser criteria. Depending on definitions, between 66% and 93% of those who met criteria for PTSD also met criteria for a diagnosis of CPTSD. The ITQ-ID showed a single-component structure, with very good-to-excellent internal consistency, excellent test–retest reliability, and evidence of concurrent, discriminant, and content validity. Significance: The results support the potential of the ITQ-ID for assessment of PTSD and CPTSD in people with intellectual disabilities in both clinical and research contexts and highlight the need for further validation work.

Item Type:	Article
Additional Information:	Funding Information: The study is part of a larger project funded by a grant from the UK National Institute for Clinical Research (NIHR) Health Technology Assessment Programme (project HTA 17/125/04). The views expressed are those of the authors and not necessarily those of the NIHR or the Department of Health and Social Care. Publisher Copyright: © 2023 The Authors. British Journal of Clinical Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.
Uncontrolled Keywords:	intellectual disability,international trauma questionnaire,ptsd,clinical psychology ,/dk/atira/pure/subjectarea/asjc/3200/3203
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	10 Oct 2023 00:49
Last Modified:	10 Oct 2023 00:49
URI:	https://ueaeprints.uea.ac.uk/id/eprint/93209
DOI:	10.1111/bjc.12421

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