Table 1.

Subtypes of ADHD and Comorbid Disorders in ADHD-affected Probands

	Probands only (N=95)		Total sample (N=155)
	Number	%	Number	%
ADHD subtypes
Combined	66	69.5	101	64.3
Inattentive	26	27.4	49	31.2
Hyperactive	3	3.2	7	4.5
Conduct disorder	4	4.3	9	5.8
ODD	25	26.6	48	31.0
Any disruptive behavior disorder	29	30.9	51	32.9
Major Depression	11	11.7	14	9.0
Dysthymia	0	0	2	1.3
Bipolar I	0	0	0	0
Bipolar II	0	0	0	0
Any mood disorder	11	11.7	15	9.7
GAD	13	14.0	16	10.5
OCD	3	3.2	6	3.9
Social phobia	16	17.2	31	20.1
Specific phobia	16	17.2	23	14.9
Separation anxiety	12	12.9	21	13.6
Agoraphobia	2	2.2	2	1.3
Any anxiety disorder	52	55.9	85	55.2
Tourette's disorder	16	17.0	17	11.0
CMVT	5	5.3	10	6.5
Nonspecific	9	9.6	10	6.5
Any tic disorder	33	34.0	37	23.9
Enuresis	5	5.3	10	6.5
Substance abuse	1	1.1	1	0.7
Tobacco	2	2.3	2	1.4
No comorbidities	15	16.0	31	20.0

Note: ADHD = attention deficit hyperactivity disorder; ODD = oppositional defiant disorder; GAD = generalized anxiety disorder; OCD = obsessive compulsive disorder; CMVT = chronic motor/vocal tics. Total sample for ADHD subtypes was 157. Two siblings did not have available data on comorbid psychiatric conditions.