Validation of the International Trauma Interview (ITI) for the Clinical Assessment of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in a Lithuanian Sample. Issue 1 (31st December 2022)

• Record Type: Journal Article
• Authors: Gelezelyte, Odeta; Roberts, Neil P.; Kvedaraite, Monika; Bisson, Jonathan I.; Brewin, Chris R.; Cloitre, Marylene; Kairyte, Agniete; Karatzias, Thanos; Shevlin, Mark; Kazlauskas, Evaldas
• Is Part Of: European journal of psychotraumatology. Volume 13:Issue 1(2022)
• Publication Date: 2022-12-31
• Subjects: International Trauma Interview -- posttraumatic stress disorder -- complex posttraumatic stress disorder -- assessment -- ICD-11; Entrevista Internacional de Trauma, trastorno de estrés postraumático, trastorno de estrés postraumático complejo, evaluación, CIE-11; 国际创伤访谈, 创伤后应激障碍, 复杂性创伤后应激障碍, 评估, ICD-11; Post-traumatic stress disorder -- Periodicals; Stress Disorders, Post-Traumatic; Post-traumatic stress disorder; Electronic journals; Periodicals; Periodicals; Fulltext; Internet Resources; Periodicals; 616.8521
• DOI: 10.1080/20008198.2022.2037905
• Languages: English
• ISSNs: 2000-8198

Abstract

ABSTRACT: Background: The 11 th revision of the International Classification of Diseases (ICD-11) includes a new diagnosis of complex posttraumatic stress disorder (CPTSD). The International Trauma Interview (ITI) is a novel clinician-administered diagnostic interview for the assessment of ICD-11 PTSD and CPTSD. Objective: The aim of this study was to evaluate the psychometric properties of the ITI in a Lithuanian sample in relation to interrater agreement, latent structure, internal reliability, as well as convergent and discriminant validity. Method: In total, 103 adults with a history of various traumatic experiences participated in the study. The sample was predominantly female (83.5%), with a mean age of 32.64 years ( SD = 9.36). For the assessment of ICD-11 PTSD and CPTSD, the ITI and the self-report International Trauma Questionnaire (ITQ) were used. Mental health indicators, such as depression, anxiety, and dissociation, were measured using self-report questionnaires. The latent structure of the ITI was evaluated using confirmatory factor analysis (CFA). In order to test the convergent and discriminant validity of the ITI we conducted a structural equation model (SEM). Results: Overall, based on the ITI, 18.4% of participants fulfilled diagnostic criteria for PTSD and 21.4% for CPTSD. A second-order two-factor CFA model of the ITI PTSD and disturbances in self-organization (DSO) symptoms demonstrated a good fit. The associations with various mental health indicators supported the convergent and discriminant validity of the ITI. The clinician-administered ITI and self-report ITQ had poor to moderate diagnostic agreement across different symptom clusters. Conclusion: The ITI is a reliable and valid tool for assessing and diagnosing ICD-11 PTSD and CPTSD. HIGHLIGHTS: A study in Lithuania showed that the International Trauma Interview is a valid tool for assessing and diagnosing ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD).