Table 2.

Characteristics of the Study Cohort

Group	N	%
Hispanic or Latino ethnicity	8,706	5.1
Non-Hispanic
White	101,377	59.6
Black or African American	55,286	32.5
Asian or Pacific Islander	4,802	2.8
Gender
Female	83,700	49.2
Male	86,471	50.8
Age
Birth to 4 years	54,987	32.3
5 to 11 years	65,950	38.8
12 years and up	49,234	28.9
Disease
Asthma	22,216	13.1
Attention-deficit disorder	7,462	4.4