TABLE 1.

Basic characteristics of the included studies.

References	Nationality	Sample size of intervention group	Sample size of control group	Intervention methods	JADAD
Zimmerman-Brenner et al., 2021	Israel	23	23	CBIT/EIT	7
Sukhodolsky et al., 2020	America	23	23	Real-NF/Sham control	7
Chen et al., 2020	China	12	12	CBIT/PE	7
Rizzo et al., 2018	Rome	25	24	hrt/PST	5
Ricketts et al., 2016	United States	12	8	CBIT/Waitlist	5
Rizzo et al., 2018	Rome	25	24	hrt/PST	5
Yates et al., 2016	United Kingdom	17	16	HRT/SP	4
McGuire et al., 2015	United States	12	12	LWT/Waitlist	4
Wilhelm et al., 2012	United States	63	59	CBIT/PST	6
Piacentini et al., 2010	United States	61	65	CBIT/PST	4
Sukhodolsky et al., 2009	United States	13	13	ACT/TAU	5
Wilhelm et al., 2003	United States	16	7	HRT/PST	4

CBIT, comprehensive behavioral intervention for tics; HRT, habit reversal therapy; LWT, living with tic; SP, supportive psychotherapy; PE, psychoeducation; NF, neurofeedback; PST, psychoeducation and supportive therapy; ACT, anger control training; TAU, treatment-as-usual; EIT, educational intervention for tics.