Table 1.

Demographic Characteristics by Psychiatric Disorder (N = 23,601)

Characteristics	ASD (N = 884)	Conduct disorder/ODD (N = 5028)	ADHD (N = 9412)	Other psychiatric disorders (N = 8317)	Total (N = 23,601)
	%
Sex (Chi-square = 1248.45)**
Boys	84.0	66.6	71.9	48.6	63.0
Girls	16.0	33.4	28.1	51.4	37.0
Age (Chi-square = 2611.16)*
5–11 years old	68.6	37.4	66.3	35.6	49.4
12–14 years old	18.4	34.1	22.7	27.3	26.6
15–17 years old	13.0	28.5	10.9	37.1	24.0
Race/Ethnicity (Chi-square = 1594.32)**
African American	51.4	76.1	50.5	61.3	59.8
White	33.4	7.4	9.8	13.3	11.4
Hispanic	15.2	16.5	39.8	25.4	28.9

Note.

ASD: Autism spectrum disorder, ODD: Oppositional defiant disorder, ADHD: Attention deficit hyperactivity disorder.

^*p < .01,

^**p < .001;

significant difference by psychiatric disorder category