title: An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity.
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.
authors: Edinburgh Napier University, School of Health & Social Care, Edinburgh, UK; NHS Lothian, Rivers Centre for Traumatic Stress, Edinburgh, UK. Electronic address: t.karatzias@napier.ac.uk.
authors: Thanos
authors: T
authors: Karatzias
authors: Ulster University, School of Psychology, Derry, UK.
authors: Mark
authors: M
authors: Shevlin
authors: NHS Lothian, Rivers Centre for Traumatic Stress, Edinburgh, UK.
authors: Claire
authors: C
authors: Fyvie
authors: National College of Ireland, School of Business, Dublin, Ireland.
authors: Philip
authors: P
authors: Hyland
authors: NHS Lothian, Rivers Centre for Traumatic Stress, Edinburgh, UK.
authors: Erifili
authors: E
authors: Efthymiadou
authors: NHS Lothian, Rivers Centre for Traumatic Stress, Edinburgh, UK.
authors: Danielle
authors: D
authors: Wilson
authors: Psychology and Counselling Directorate, Cardiff and Vale University Health Board, Cardiff, UK.
authors: Neil
authors: N
authors: Roberts
authors: Cardiff University, School of Medicine, Cardiff, UK.
authors: Jonathan I
authors: JI
authors: Bisson
authors: University College London, Clinical, Education & Health Psychology, London, UK.
authors: Chris R
authors: CR
authors: Brewin
authors: New York University, School of Medicine, USA; National Center for PTSD, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
authors: Marylene
authors: M
authors: Cloitre
mesh_terms: D000328:Adult; D004644:Emotions / Q000502:physiology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D038801:International Classification of Diseases; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D012649:Self Concept; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000523:psychology; D011795:Surveys and Questionnaires
keywords: Complex PTSD; ICD-11 Trauma Questionnaire; PTSD