Table 1.

Demographic characteristics of the study population

	Number	Percent	Percent with asthma
Total	16,860,716	100%	8.8%
Race/Ethnicity
White	6,038,614	35.8%	7.8%
Black	4,426,019	26.3%	10.4%
Hispanic	4,300,740	25.5%	8.7%
Asian	476,225	2.8%	5.9%
Other	1,619,118	9.6%	9.6%
Sex
Female	8,492,053	50.4%	7.8%
Male	8,368,143	49.6%	9.8%
Urban-rural status
Urban	6,762,301	40.1%	8.6%
Suburban	3,301,121	19.6%	8.9%
Med Metro	3,262,218	19.4%	8.8%
Small/micro/non-core	3,535,076	21.0%	9.2%
Neighborhood poverty
Non-Poor	9,399,979	55.8%	8.4%
Poor	7,460,737	44.3%	9.4%
Age category (years)
5–7	4,958,178	29.4%	11.6%
8–10	3,365,368	20.0%	10.0%
11–13	3,012,862	17.9%	8.3%
14–16	2,963,396	17.6%	6.9%
17–20	2,560,912	15.2%	4.9%
Inner-city residence
Non-inner city	13,129,230	77.9%	8.8%
Inner-city	3,731,486	22.1%	8.9%