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Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
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Langdon, Peter E., 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. doi:10.1111/bjc.12421 ISSN 0144-6657.
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WRAP-Evaluation-of-an-adapted-version-of-the-International-Trauma-Questionnaire-for-use-by-people-with-intellectual-disabilities-Langdon-2023.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (242Kb) | Preview |
Official URL: https://doi.org/10.1111/bjc.12421
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: | Journal Article | ||||||||
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Subjects: | R Medicine > RC Internal medicine | ||||||||
Divisions: | Faculty of Social Sciences > Centre for Educational Development, Appraisal and Research (CEDAR) | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | Intellectual disability, Developmental disabilities, Post-traumatic stress disorder -- Evaluation, Mental illness -- Evaluation | ||||||||
Journal or Publication Title: | British Journal of Clinical Psychology | ||||||||
Publisher: | John Wiley & Sons Ltd. | ||||||||
ISSN: | 0144-6657 | ||||||||
Official Date: | June 2023 | ||||||||
Dates: |
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Volume: | 62 | ||||||||
Number: | 2 | ||||||||
Page Range: | pp. 471-482 | ||||||||
DOI: | 10.1111/bjc.12421 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 20 March 2023 | ||||||||
Date of first compliant Open Access: | 21 March 2023 | ||||||||
RIOXX Funder/Project Grant: |
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