Cloitre, M;
Shevlin, M;
Brewin, CR;
Bisson, JI;
Roberts, NP;
Maercker, A;
Karatzias, T;
(2018)
The International Trauma Questionnaire: development of a self-report measure of ICD-11 PTSD and complex PTSD.
Acta Psychiatrica Scandinavica
, 138
(6)
pp. 536-546.
10.1111/acps.12956.
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Abstract
OBJECTIVE: The purpose of this study was to finalize the development of the International Trauma Questionnaire (ITQ), a self-report diagnostic measure of post-traumatic stress disorder (PTSD) and complex PTSD (CPTSD), as defined in the 11th version of the International Classification of Diseases (ICD-11). METHOD: The optimal symptom indicators of PTSD and CPTSD were identified by applying item response theory (IRT) analysis to data from a trauma-exposed community sample (n = 1051) and a trauma-exposed clinical sample (n = 247) from the United Kingdom. The validity of the optimized 12-item ITQ was assessed with confirmatory factor analyses. Diagnostic rates were estimated and compared to previous validation studies. RESULTS: The latent structure of the 12-item, optimized ITQ was consistent with prior findings, and diagnostic rates of PTSD and CPTSD were in line with previous estimates. CONCLUSION: The ITQ is a brief, simply worded measure of the core features of PTSD and CPTSD. It is consistent with the organizing principles of the ICD-11 to maximize clinical utility and international applicability through a focus on a limited but central set of symptoms. The measure is freely available and can be found in the body of this paper.
Type: | Article |
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Title: | The International Trauma Questionnaire: development of a self-report measure of ICD-11 PTSD and complex PTSD |
Location: | United States |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1111/acps.12956 |
Publisher version: | http://dx.doi.org/10.1111/acps.12956 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
Keywords: | ICD-11, complex PTSD, post-traumatic stress disorder, self-report, the International Trauma Questionnaire |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Clinical, Edu and Hlth Psychology |
URI: | https://discovery.ucl.ac.uk/id/eprint/10055935 |
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