Revisiting the structure of the Yale Global Tic Severity Scale (YGTSS) in a sample of Chinese children with tic disorders

Background To the best of our knowledge, although the Chinese version of the Yale Global Tic Severity Scale (YGTSS) is widely used in child psychiatry departments in China, there is very little evidence focusing on the psychometric characteristics of the Chinese version of YGTSS. In this present stu...

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Bibliographic Details
Published in:BMC psychiatry 2021-08, Vol.21 (1), p.1-394, Article 394
Main Authors: Wen, Fang, Gu, Yi, Yan, Junjuan, Liu, Jingran, Wang, Fang, Yu, Liping, Li, Ying, Cui, Yonghua
Format: Article
Language:English
Subjects:
Age
Approximation
Child & adolescent psychiatry
Children
China
Confirmatory factor analysis
Diagnosis
Evaluation
Factor analysis
Mean square errors
Mental disorders
Movement disorders
Neurology
Obsessive compulsive disorder
Pediatric research
Performance evaluation
Psychiatry
Psychological tests
Quantitative psychology
Reliability
Tic disorders
Validity
YGTSS
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Summary:Background To the best of our knowledge, although the Chinese version of the Yale Global Tic Severity Scale (YGTSS) is widely used in child psychiatry departments in China, there is very little evidence focusing on the psychometric characteristics of the Chinese version of YGTSS. In this present study, we aim to re-examine the structure of the Chinese version of YGTSS and investigate its reliability and validity. Methods A total of 367 children and adolescents with tic disorders aged 5-16 years old participated in the study. The Cronbach's alpha, test-retest reliability and concurrent validity will be calculated. Confirmatory Factor Analysis (CFA) also will be performed to assess the structure of YGTSS. Results The Cronbach's alpha of the motor tic subscale of YGTSS was 0.84, for the phonic tic subscale of YGTSS, it was 0.90, but for the whole scale, it was 0.58. The test-retest reliability of YGTSS was 0.84. For the results of CFA, the Comparative Fit Index (CFI) of YGTSS based on the Two-Factor Model and Three-Factor Model was 0.97 and 0.96 respectively. The measurement invariance analysis suggested that the Two-Factor model of YGTSS across different age and sex groups was at the accepted level ([greater than or equai to]0.90). Conclusion Overall, according to the results of this research, it suggested that the Chinese version of YGTSS showed good psychometric properties. It can be used in the assessment of tic disorders in the Chinese population. In the future, more comprehensive tools for assessing tics need to be further developed, which can cover the symptoms of premonitory urge and tic related obsessive-compulsive symptoms. Keywords: YGTSS, Reliability, Validity, Confirmatory factor analysis, China
ISSN:1471-244X
1471-244X
DOI:10.1186/s12888-021-03399-5