Table 3.

Age difference in OCD, TD and TD subtypes.

Disorders	Children	Adolescents	χ 2	p
	(N = 41,332)	(N = 30,775)
OCD	1.51%	1.17%	15.45	<0.001
Tic Disorder	3.55%	0.99%	480.98	<0.001
TS	0.56%	0.14%	84.76	<0.001
CMTD	0.68%	0.14%	115.44	<0.001
CVTD	0.72%	0.14%	125.54	<0.001
TTD	1.59%	0.58%	157.65	<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.