Prevalence and Validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD: A Population-Based Survey of Hong Kong Adults

Ho, Grace W.K.; Chan, Ko Ling; Karatzias, Thanos; Hyland, Philip; Fung, Hong Wang; Shevlin, Mark

Abstract

The present study aimed to report the prevalence of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) in the general adult Hong Kong population, and examine the validity of the Chinese International Trauma Questionnaire (ITQ). This descriptive cross-sectional population-based telephone survey included a representative sample of 1,070 non-institutionalized permanent Hong Kong residents ages 18-64 years. Participants provided responses to the Chinese version of the ITQ, and measures of adverse childhood experiences (ACEs), depression, anxiety, and stress. Based on the diagnostic algorithm of the ITQ, 5.9% of the sample screened positive for either CPTSD or PTSD, with CPTSD (4.2%) being more common that PTSD (1.7%). Results of the confirmatory factor analysis indicated the first-order correlated 6-factor model to be the best fitting solution. Symptom cluster summed scores were all positively and significantly correlated with all criterion variables. This investigation established the prevalence rates of ICD-11 PTSD and CPTSD using a general adult population sample in Hong Kong. The Chinese ITQ demonstrated sound factorial validity and concurrent validity. Future research can further characterize ICD-11 PTSD and CPTSD in subgroups using the Chinese ITQ.

Citation

Ho, G. W., Chan, K. L., Karatzias, T., Hyland, P., Fung, H. W., & Shevlin, M. (2024). Prevalence and Validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD: A Population-Based Survey of Hong Kong Adults. Asian Journal of Psychiatry, 96, Article 104045. https://doi.org/10.1016/j.ajp.2024.104045

• Journal Article Type: Article
• Acceptance Date: Apr 6, 2024
• Online Publication Date: Apr 10, 2024
• Publication Date: 2024-06
• Deposit Date: Apr 9, 2024
• Publicly Available Date: Apr 11, 2025
• Print ISSN: 1876-2018
• Electronic ISSN: 1876-2026
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 96
• Article Number: 104045
• DOI: https://doi.org/10.1016/j.ajp.2024.104045
• Keywords: PTSD, Complex PTSD, prevalence, International Trauma Questionnaire, psychometric evaluation, Chinese adults
• Public URL: http://researchrepository.napier.ac.uk/Output/3588699