Table 2.

Sex difference in OCD, TD and TD subtypes.

Disorders	Boys	Girls	χ 2	p
	(N = 35,953)	(N = 36,154)
OCD	1.17%	1.56%	19.94	<0.001
Tic Disorder	2.56%	2.35%	3.43	>0.05
TS	0.54%	0.22%	47.27	<0.001
CMTD	0.45%	0.45%	<0.001	>0.05
CVTD	0.51%	0.44%	1.68	>0.05
TTD	1.39%	0.92%	34.00	<0.001

Note: OCD: obsessive-compulsive disorder; TS: Tourette’s syndrome; CMTD: chronic motor tic disorder; CVTD: chronic vocal tic disorder, TTD: transient tic disorder.