Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire

Background: The 11th edition of the International Classification of Diseases has redefined adjustment disorder and the International Adjustment Disorder Questionnaire (IADQ) was developed to assess the symptoms and diagnostic criteria. The present study is the first to investigate ICD-11 adjustment...

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Main Authors: Hong Wang Fung, Ming Yu Claudia Wong, Grace Wing Ka Ho, Mark Shevlin, Anson Kai Chun Chau, Stanley Kam Ki Lam, Janet Yuen-Ha Wong, Shan-yan Huang
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:European Journal of Psychotraumatology
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Online Access:https://www.tandfonline.com/doi/10.1080/20008066.2025.2528306
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author Hong Wang Fung
Ming Yu Claudia Wong
Grace Wing Ka Ho
Mark Shevlin
Anson Kai Chun Chau
Stanley Kam Ki Lam
Janet Yuen-Ha Wong
Shan-yan Huang
author_facet Hong Wang Fung
Ming Yu Claudia Wong
Grace Wing Ka Ho
Mark Shevlin
Anson Kai Chun Chau
Stanley Kam Ki Lam
Janet Yuen-Ha Wong
Shan-yan Huang
author_sort Hong Wang Fung
collection DOAJ
description Background: The 11th edition of the International Classification of Diseases has redefined adjustment disorder and the International Adjustment Disorder Questionnaire (IADQ) was developed to assess the symptoms and diagnostic criteria. The present study is the first to investigate ICD-11 adjustment disorder using the IADQ in the East Asian context.Methods: We administered standardized self-report measures, including the Chinese version of the IADQ, to a sample of 766 college students in Taiwan, of whom 265 (34.6%) endorsed at least one psychosocial stressor.Results: The two-factor structure of the IADQ reported in previous studies was replicated. The reliability of the two IADQ subscales were high (α = .935 to .948), and they were highly correlated with symptoms of depression, anxiety, and complex PTSD (rs = .69 to .79, p < .001), demonstrating concurrent validity. In this sample, 5.4% of participants met the diagnostic criteria for ICD-11 adjustment disorder. When participants with probable depression (PHQ-9 ≥ 15) were excluded as per the ICD-11 exclusion rules, 15 participants (1.96%) had probable ICD-11 adjustment disorder.Conclusions: The findings suggest that ICD-11 adjustment disorder can be reliably and validly assessed using the IADQ in the Chinese context. Future studies can use the IADQ to further research the disorder in diverse clinical and nonclinical settings.
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spelling doaj-art-46ee38f6f4be49eda51e144b7628c3192025-08-20T02:37:14ZengTaylor & Francis GroupEuropean Journal of Psychotraumatology2000-80662025-12-0116110.1080/20008066.2025.2528306Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder QuestionnaireHong Wang Fung0Ming Yu Claudia Wong1Grace Wing Ka Ho2Mark Shevlin3Anson Kai Chun Chau4Stanley Kam Ki Lam5Janet Yuen-Ha Wong6Shan-yan Huang7School of Nursing, Hong Kong Polytechnic University, Hung Hom, Hong KongDepartment of Health and Physical Education, The Education University of Hong Kong, Tai Po, Hong KongSchool of Nursing, Hong Kong Polytechnic University, Hung Hom, Hong KongSchool of Psychology, Ulster University, Coleraine, Northern IrelandDepartment of Psychiatry, The University of Hong Kong, Pokfulam, Hong KongNethersole School of Nursing, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong KongSchool of Nursing and Health Sciences, Hong Kong Metropolitan University, Hong KongDepartment of Marketing and Supply Chain Management, Overseas Chinese University, TaiwanBackground: The 11th edition of the International Classification of Diseases has redefined adjustment disorder and the International Adjustment Disorder Questionnaire (IADQ) was developed to assess the symptoms and diagnostic criteria. The present study is the first to investigate ICD-11 adjustment disorder using the IADQ in the East Asian context.Methods: We administered standardized self-report measures, including the Chinese version of the IADQ, to a sample of 766 college students in Taiwan, of whom 265 (34.6%) endorsed at least one psychosocial stressor.Results: The two-factor structure of the IADQ reported in previous studies was replicated. The reliability of the two IADQ subscales were high (α = .935 to .948), and they were highly correlated with symptoms of depression, anxiety, and complex PTSD (rs = .69 to .79, p < .001), demonstrating concurrent validity. In this sample, 5.4% of participants met the diagnostic criteria for ICD-11 adjustment disorder. When participants with probable depression (PHQ-9 ≥ 15) were excluded as per the ICD-11 exclusion rules, 15 participants (1.96%) had probable ICD-11 adjustment disorder.Conclusions: The findings suggest that ICD-11 adjustment disorder can be reliably and validly assessed using the IADQ in the Chinese context. Future studies can use the IADQ to further research the disorder in diverse clinical and nonclinical settings.https://www.tandfonline.com/doi/10.1080/20008066.2025.2528306ICD-11 adjustment disorderThe International Adjustment Disorder Questionnaire (IADQ)psychosocial carecross-cultural psychiatryvalidationTrastorno de adaptación según la CIE-11
spellingShingle Hong Wang Fung
Ming Yu Claudia Wong
Grace Wing Ka Ho
Mark Shevlin
Anson Kai Chun Chau
Stanley Kam Ki Lam
Janet Yuen-Ha Wong
Shan-yan Huang
Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire
European Journal of Psychotraumatology
ICD-11 adjustment disorder
The International Adjustment Disorder Questionnaire (IADQ)
psychosocial care
cross-cultural psychiatry
validation
Trastorno de adaptación según la CIE-11
title Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire
title_full Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire
title_fullStr Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire
title_full_unstemmed Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire
title_short Investigating ICD-11 adjustment disorder among college students in Taiwan using the Chinese version of the International Adjustment Disorder Questionnaire
title_sort investigating icd 11 adjustment disorder among college students in taiwan using the chinese version of the international adjustment disorder questionnaire
topic ICD-11 adjustment disorder
The International Adjustment Disorder Questionnaire (IADQ)
psychosocial care
cross-cultural psychiatry
validation
Trastorno de adaptación según la CIE-11
url https://www.tandfonline.com/doi/10.1080/20008066.2025.2528306
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