Cloitre, Marylene and Shevlin, Mark and Brewin, Chris R. and Bisson, Jonathan I. and Roberts, Neil P. and Maercker, Andreas and Karatzias, Thanos and Hyland, Philip
(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.
ISSN 0001-690X
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.
| Item Type: |
Article
|
| Keywords: |
International Trauma Questionnaire; self‐report measure; ICD‐11 PTSD; complex PTSD; |
| Academic Unit: |
Faculty of Science and Engineering > Psychology |
| Item ID: |
12642 |
| Identification Number: |
https://doi.org/10.1111/acps.12956 |
| Depositing User: |
Philip Hyland
|
| Date Deposited: |
20 Mar 2020 17:02 |
| Journal or Publication Title: |
Acta Psychiatrica Scandinavica |
| Publisher: |
Wiley |
| Refereed: |
Yes |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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