TABLE 1

Demographic Information: Population Characteristics of Children With ADHD, Children With Asthma, and All Children Included in the NSCH

Demographic	ADHD (n = 6030), %	Asthma (n = 6133), %	All Children (N = 69 031), %
Gender
Male	72.0	56.9	51.0
Female	28.0	43.1	49.0
Age, y
6–11	43.2	49.4	48.9
12–17	56.8	50.6	51.1
Race
White	71.7	58.6	62.3
Black	14.7	21.2	14.8
Hispanic	6.9	12.0	15.3
Other	6.7	8.1	7.7
Region
Northeast	16.9	19.5	17.9
Midwest	23.1	23.1	22.6
South	42.0	38.1	36.0
West	18.0	19.3	23.6
Insurance status
Insured	86.6	87.0	84.5
Uninsured	2.6	2.2	5.3
Intermittently insured	10.9	10.8	10.2
Household income, % of FPL
<100	19.9	20.6	16.7
100–199	23.0	22.5	22.5
200–399	32.4	32.5	33.7
≥400	24.8	24.4	27.1
Parent's education
Less than high school	6.2	6.9	7.5
High school	29.3	26.2	26.8
More than high school	64.5	66.9	65.8
Language spoken at home
English	98.2	94.1	88.8
Non-English	1.8	5.9	11.2
Presence of comorbidities	63.5	30.6	9.9
Severity of illness^a
Minor	50.2	56.1	63.0
Moderate	40.6	37.3	30.8
Severe	9.2	6.5	6.2

FPL indicates federal poverty level.
↵a Severity of illness only for children who were identified as having a medical or mental health condition.