Prevalence and validity of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD: A population-based survey of Hong Kong adults

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

Research output: Contribution to journalArticlepeer-review

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 1070 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.
Original languageEnglish
Article number104045
Pages (from-to)1-6
Number of pages6
JournalAsian Journal of Psychiatry
Volume96
Early online date10 Apr 2024
DOIs
Publication statusPublished online - 10 Apr 2024

Bibliographical note

Copyright © 2024 Elsevier B.V. All rights reserved.

Keywords

  • PTSD
  • Complex PTSD
  • Prevalence
  • International trauma questionnaire
  • Psychometric evaluation
  • Chinese adults
  • International Trauma Questionnaire

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