An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity

Karatzias, Thanos; Cloitre, Marylene; Brewin, Chris R.; Bisson, Jonathan I.; Roberts, Neil; Wilson, Danielle; Efthymiadou, Erifili; Hyland, Philip; Fyvie, Claire; Shevlin, Mark

doi:10.1016/j.janxdis.2016.10.009

An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity

Karatzias, Thanos; Cloitre, Marylene; Brewin, Chris R.; Bisson, Jonathan I.; Roberts, Neil; Wilson, Danielle; Efthymiadou, Erifili; Hyland, Philip; Fyvie, Claire; Shevlin, Mark

Authors

Prof Thanos Karatzias T.Karatzias@napier.ac.uk
Professor

Marylene Cloitre

Chris R. Brewin

Jonathan I. Bisson

Neil Roberts

Danielle Wilson

Erifili Efthymiadou

Philip Hyland

Claire Fyvie

Mark Shevlin

Abstract

Among the conditions following exposure to traumatic life events proposed by ICD-11 are Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). The primary aim of this study was to provide an assessment of the reliability and validity of a newly developed self-report measure of ICD-11 PTSD and CPTSD: the ICD-11 Trauma Questionnaire (ICD-TQ). Participants in this study were a sample of individuals who were referred for psychological therapy to a National Health Service (NHS) trauma centre in Scotland (N = 193). Participants completed the ICD-TQ and measures of traumatic life events, DSM-5 PTSD, emotion dysregulation, self–esteem, and interpersonal difficulties. Confirmatory factor analysis results supported the factorial validity of the ICD-TQ with results in line with ICD-11 proposals. The ICD-TQ demonstrated satisfactory internal reliability, and correlation results indicated that the scale exhibited convergent and discriminant validity. Current results provide initial support for the psychometric properties of this initial version of the ICD-TQ. Future theoretical and empirical work will be required to generate a final version of the ICD-TQ that will match the diagnostic structure of PTSD and CPTSD when ICD-11 is published.

Journal Article Type	Article
Acceptance Date	Oct 13, 2016
Online Publication Date	Oct 17, 2016
Publication Date	2016-12
Deposit Date	Oct 24, 2016
Publicly Available Date	Apr 18, 2018
Journal	Journal of Anxiety Disorders
Print ISSN	0887-6185
Electronic ISSN	1873-7897
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	44
Pages	73-79
DOI	https://doi.org/10.1016/j.janxdis.2016.10.009
Keywords	PTSD, Complex PTSD, ICD-11 Trauma Questionnaire,
Public URL	http://researchrepository.napier.ac.uk/Output/407238
Contract Date	Oct 24, 2016