Table 5a.

Demographic Characteristics of Children with ASD by Concomitant Diagnostic Condition^1,2

Co-occuring Disorder Group	Sex			Age			IQ
	Male (N = 563)	Female (N = 94)	P-value	≤6 year (N = 268)	> 6 years (N = 390)	p-value	< 70 (N = 257)	≥ 70 (N = 376)	p-value
ADHD	464 (82.3%)	70 (74.5%)	0.073	212 (79.1%)	322 (82.6%)	0.265	203 (79.0%)	311 (82.7%)	0.239
ODD	260 (46.2%)	39 (41.5%)	0.398	139 (51.9%)	160 (41.1%)	0.007*	96 (37.4%)	195 (51.9%)	<0.001*
CD	64 (11.4%)	13 (13.8%)	0.496	35 (13.1%)	42 (10.8%)	0.366	35 (13.6%)	40 (10.7%)	0.260
Any Anxiety Diosrder	237 (42.1%)	38 (40.4%)	0.761	103 (38.4%)	172 (44.2%)	0.140	82 (31.9%)	188 (50.0%)	<0.001*
Any Mood Disorder	42 (7.5%)	7 (7.5%)	1.00	23 (8.6%)	26 (6.7%)	0.358	10 (3.9%)	35 (9.3%)	0.009*
Internalizing Disorder	249 (44.2%)	41 (43.6%)	0.912	111 (41.4%)	179 (46.0%)	0.244	85 (33.1%)	197 (52.4%)	<0.001*
Externalizing Disorder	492 (87.4%)	76 (80.9%)	0.086	232 (86.6%)	336 (86.4%)	0.944	212 (82.5%)	336 (89.4%)	0.013*
≥ 2 additional disorders *	373 (66.1%)	62 (66.0%)	0.973	180 (67.2%)	255 (65.4%)	0.636	148 (57.6%)	276 (73.4%)	<0.001*

¹Groups are not mutually exclusive

²Percents are percent of the column with the indicated diagnosis