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

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

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

J Anxiety Disord. 2016 Dec:44:73-79. doi: 10.1016/j.janxdis.2016.10.009. Epub 2016 Oct 17.

Authors

Affiliations

¹ Edinburgh Napier University, School of Health & Social Care, Edinburgh, UK; NHS Lothian, Rivers Centre for Traumatic Stress, Edinburgh, UK. Electronic address: [email protected].
² Ulster University, School of Psychology, Derry, UK.
³ NHS Lothian, Rivers Centre for Traumatic Stress, Edinburgh, UK.
⁴ National College of Ireland, School of Business, Dublin, Ireland.
⁵ Psychology and Counselling Directorate, Cardiff and Vale University Health Board, Cardiff, UK.
⁶ Cardiff University, School of Medicine, Cardiff, UK.
⁷ University College London, Clinical, Education & Health Psychology, London, UK.
⁸ New York University, School of Medicine, USA; National Center for PTSD, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.

PMID: 27776256
DOI: 10.1016/j.janxdis.2016.10.009

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.

Keywords: Complex PTSD; ICD-11 Trauma Questionnaire; PTSD.

Publication types

Validation Study

MeSH terms

Adult
Emotions / physiology*
Factor Analysis, Statistical
Female
Humans
International Classification of Diseases
Male
Middle Aged
Psychometrics
Reproducibility of Results
Self Concept*
Stress Disorders, Post-Traumatic / diagnosis*
Stress Disorders, Post-Traumatic / psychology
Surveys and Questionnaires