The International Trauma Questionnaire: development of a self-report measure of ICD-11 PTSD and complex PTSD.
- Cloitre M National Center for PTSD Dissemination and Training Division, VA Palo Alto Health Care System, Palo Alto, CA, USA.
- Shevlin M School of Psychology, Ulster University, Derry, Northern Ireland.
- Brewin CR Clinical Educational & Health Psychology, University College London, London, UK.
- Bisson JI School of Medicine, Cardiff University, Cardiff, UK.
- Roberts NP Psychology and Psychological Therapies Directorate, Cardiff & Vale University Health Board, Cardiff, UK.
- Maercker A Department of Psychopathology and Clinical Intervention, University of Zurich, Zurich, Switzerland.
- Karatzias T Rivers Centre for Traumatic Stress, NHS Lothian, Edinburgh, UK.
- Hyland P School of Business, National College of Ireland, Dublin, Ireland.
- 2018-09-05
Published in:
- Acta psychiatrica Scandinavica. - 2018
ICD-11
complex PTSD
post-traumatic stress disorder
self-report
the International Trauma Questionnaire
Adolescent
Adult
Aged
Aged, 80 and over
Female
Humans
International Classification of Diseases
Male
Middle Aged
Psychiatric Status Rating Scales
Psychological Trauma
Reproducibility of Results
Self Report
Stress Disorders, Post-Traumatic
United Kingdom
Young Adult
English
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.
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.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1111/acps.12956
- PMID 30178492
- Persistent URL
- https://sonar.ch/global/documents/208371
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