Abstract
BackgroundTo 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.MethodsA 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.ResultsThe 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 (≥0.90).ConclusionOverall, 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.
Highlights
To the best of our knowledge, 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
It was reported that there were several strengths of YGTSS: first, it can comprehensively evaluate the severity of the tic symptoms based on five dimensions mentioned above, which helps to characterize and quantify the tic symptoms; second, YGTSS is sensitive to the treatment response and is widely used in clinical and scientific research in tic related disorder such as the tic-related obsessivecompulsive disorders; thirdly, it showed “stable” structure and good psychometric characteristics [16,17,18,19]
The preliminary data provided in this report indicate that YGTSS is an effective tool for tic symptoms assessment [12]
Summary
To the best of our knowledge, 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. Wen et al BMC Psychiatry (2021) 21:394 interference of the motor and phonic tics, as well as the impairment of tic symptoms [8, 14] It was developed by Leckman in 1989 and it was widely used for the assessment of tic symptoms all over the world which included China [15]. It was reported that there were several strengths of YGTSS: first, it can comprehensively evaluate the severity of the tic symptoms based on five dimensions mentioned above, which helps to characterize and quantify the tic symptoms; second, YGTSS is sensitive to the treatment response and is widely used in clinical and scientific research in tic related disorder such as the tic-related obsessivecompulsive disorders; thirdly, it showed “stable” structure and good psychometric characteristics [16,17,18,19]
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