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

Peter E. Langdon, Jonathan I. Bisson, Gemma Rogers, Sophie Swain, Steve Hiles, Alan Watkins Orcid Logo, Paul Willner

British Journal of Clinical Psychology, Volume: 62, Issue: 2, Pages: 471 - 482

Swansea University Authors: Steve Hiles, Alan Watkins Orcid Logo, Paul Willner

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DOI (Published version): 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 peopl...

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Published in: British Journal of Clinical Psychology
ISSN: 0144-6657 2044-8260
Published: Wiley 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa62896
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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&#x2013;retest reliability, and evidence of concurrent, discriminant, and content validity. 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spelling 2023-06-01T11:13:51.3045699 v2 62896 2023-03-09 Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities 5ecd70f8c0f27219f84a7f297d99b22b Steve Hiles Steve Hiles true false 81fc05c9333d9df41b041157437bcc2f 0000-0003-3804-1943 Alan Watkins Alan Watkins true false 4c278ffb6e4af6ab8816be40af66ecd3 Paul Willner Paul Willner true false 2023-03-09 MEDS 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. Journal Article British Journal of Clinical Psychology 62 2 471 482 Wiley 0144-6657 2044-8260 Intellectual disability, International Trauma Questionnaire, PTSD 1 6 2023 2023-06-01 10.1111/bjc.12421 http://dx.doi.org/10.1111/bjc.12421 COLLEGE NANME Medical School COLLEGE CODE MEDS Swansea University SU Library paid the OA fee (TA Institutional Deal) NIHR - HTA 17/125/04 2023-06-01T11:13:51.3045699 2023-03-09T16:34:26.0865353 Faculty of Medicine, Health and Life Sciences School of Psychology Peter E. Langdon 1 Jonathan I. Bisson 2 Gemma Rogers 3 Sophie Swain 4 Steve Hiles 5 Alan Watkins 0000-0003-3804-1943 6 Paul Willner 7 62896__27621__c46284d54f7143c0a7fab95a16532966.pdf 62896.VOR.pdf 2023-05-26T12:25:15.0320030 Output 220472 application/pdf Version of Record true This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. true eng http://creativecommons.org/licenses/by/4.0/
title Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
spellingShingle Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
Steve Hiles
Alan Watkins
Paul Willner
title_short Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
title_full Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
title_fullStr Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
title_full_unstemmed Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
title_sort Evaluation of an adapted version of the International Trauma Questionnaire for use by people with intellectual disabilities
author_id_str_mv 5ecd70f8c0f27219f84a7f297d99b22b
81fc05c9333d9df41b041157437bcc2f
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author_id_fullname_str_mv 5ecd70f8c0f27219f84a7f297d99b22b_***_Steve Hiles
81fc05c9333d9df41b041157437bcc2f_***_Alan Watkins
4c278ffb6e4af6ab8816be40af66ecd3_***_Paul Willner
author Steve Hiles
Alan Watkins
Paul Willner
author2 Peter E. Langdon
Jonathan I. Bisson
Gemma Rogers
Sophie Swain
Steve Hiles
Alan Watkins
Paul Willner
format Journal article
container_title British Journal of Clinical Psychology
container_volume 62
container_issue 2
container_start_page 471
publishDate 2023
institution Swansea University
issn 0144-6657
2044-8260
doi_str_mv 10.1111/bjc.12421
publisher Wiley
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str School of Psychology{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}School of Psychology
url http://dx.doi.org/10.1111/bjc.12421
document_store_str 1
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description 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.
published_date 2023-06-01T20:20:33Z
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