[Retracted] Psychotherapy Combined with Western Medicine in the Treatment of Children with Tic Disorder: Systematic Review and Meta-Analysis

Table 1

Methodological evaluation and bias risk assessment of included literature.

Paper source	Methods of randomization	Allocation concealment	Blind method	Lost visit/exit	Other bias	Jadad (score)
Wu et al. [12] 2021	Random digital table method	Not described	Not described	Not described	Not clear	2
Yang [13] 2020	Random digital table method	Not described	Not described	Not described	Not clear	2
Zhang et al. [14] 2020	Random digital table method	Not described	Not described	Not described	Not clear	2
Chen [15] 2020	Computer random method	Not described	Not described	Not described	Not clear	2
Yu et al. [16] 2019	Random words	Not described	Not described	Not described	Not clear	1
Dai et al. [17] 2018	Random words	Not described	Not described	Not described	Not clear	1
Li [18] 2017	Random digital table method	Not described	Not described	Not described	Not clear	2
Shi and Wang [19] 2017	Random words	Not described	Not described	Described	Not clear	2
Peng et al. [20] 2016	Random words	Not described	Not described	Not described	Not clear	1
Zhao [21] 2014	Random words	Not described	Not described	Not described	Not clear	1
Guo et al. [22] 2013	Random words	Not described	Not described	Not described	Not clear	1
Chen and Chen [23] 2017	Random digital table method	Not described	Not described	Not described	Not clear	2
Fang et al. [24] 2016	Random words	Not described	Not described	Not described	Not clear	1
Zheng et al. [25] 2014	Random digital table method	Not described	Not described	Not described	Not clear	2

Notes: random words: only random words are proposed in the text, but no specific random methods are proposed.