TABLE 2.

The incident rate of OCS in TDs.

Different groups		Number of TD with OCS/total number	Subclinical OCS rate (%)	χ2	p-value
Different types of tic disorders	Provisional tic disorder	12/115	10.43	19.52	p < 0.01**
	Chronic motor or vocal tic disorder	28/100	28.00
	Tourette syndrome	51/152	33.55
Different age groups	Younger adolescents group	69/230	30.00	8.95	p < 0.01**
	Older adolescents group	22/137	16.06
Different gender groups	Males group	80/293	27.30	4.90	p = 0.03*
	Females group	11/74	14.86

Younger, aged <10 years; older, aged ≥10 years; TDs, tic disorders; OCS, obsessive–compulsive symptoms. *p < 0.05; **p < 0.01.