Type

Journal Article

Authors

Philip Hyland
Thanos Karatzias
Andreas Maercker
Neil P Roberts
Jonathan I. Bisson
Chris R. Brewin
Mark Shevlin
Marylène Cloitre

Subjects

Business

Topics
united kingdom international development self development measure self report clinical utility international classification item response theory

The International Trauma Questionnaire: development of a self‐report measure of ICD‐11 PTSD and complex PTSD (2018)

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.
Collections Ireland -> Maynooth University -> Academic Unit = Faculty of Science and Engineering: Psychology
Ireland -> Maynooth University -> Type = Article
Ireland -> Maynooth University -> Status = Published

Full list of authors on original publication

Philip Hyland, Thanos Karatzias, Andreas Maercker, Neil P Roberts, Jonathan I. Bisson, Chris R. Brewin, Mark Shevlin, Marylène Cloitre

Experts in our system

1
Philip Hyland
National College of Ireland
Total Publications: 231
 
2
Thanos Karatzias
Maynooth University
Total Publications: 32
 
3
Andreas Maercker
Maynooth University
Total Publications: 14
 
4
Neil Roberts
National College Ireland
Total Publications: 27
 
5
Jonathan I. Bisson
National College Ireland
Total Publications: 29
 
6
Chris R. Brewin
National College Ireland
Total Publications: 25
 
7
Mark Shevlin
National College of Ireland
Total Publications: 125
 
8
Marylène Cloitre
National College Ireland
Total Publications: 38