TABLE 1—

Characteristics of US Children and Adolescents and Adults With Current Asthma by Birthplace: National Health Interview Survey, 2001–2009

	Children and Adolescents (aged < 18 y; n = 9187)		Adults (Aged ≥ 18 y; n = 18 363)
Variable	US-Born, %	Non–US-Born, %	US-born, %	Non–US-Born, %
Age, y
≤ 5	25.3	15.7	…	…
6–11	36.3	28.7	…	…
12–17	38.4	55.7	…	…
18–34	…	…	32.3	26.3
35–64	…	…	52.4	53.3
≥ 65	…	…	15.4	20.4
Male gender	58.9	56.0	35.3	37.8
Poverty levela
Poor	23.7	29.8	16.6	22.6
Near poor	22.8	21.8	19.6	23.6
Not poor	53.5	48.4	63.8	53.9
Home ownership
Own	62.2	52.8	67.3	54.5
Rent	28.3	38.6	27.4	35.0
Rental assistance	9.5	8.6	5.3	10.5
Health insurance	94.0	81.8	86.3	82.6
Region of residence
Northeast	20.3	26.7	19.1	28.9
Midwest	25.3	11.3	26.8	12.5
South	36.0	42.3	33.5	25.5
West	18.4	19.7	20.7	33.1
Low birth weightb	12.6	20.0
Education
Some high school	…	…	16.7	33.2
≥ high school diploma	…	…	83.3	66.8
Body mass indexc
Normal or underweight	NA	NA	33.1	33.9
Overweight	NA	NA	30.5	32.7
Obese	NA	NA	36.4	33.5
Smoking status
Current	NA	NA	25.2	14.7
Former	NA	NA	24.4	20.8
Never	NA	NA	50.5	64.4
Comorbidities
0	NA	NA	34.3	39.6
1–2	NA	NA	42.1	39.3
≥ 3	NA	NA	23.6	21.1
Usual place of medical cared	…	…	90.9	87.4
Residence in the United States, y
< 10	…	NA	…	17.2
≥ 10	…	NA	…	82.9

Note. NA = data fully or partially not available for all categories or survey years; US-born = born in the 50 US states or Washington, DC. Ellipses indicate not applicable.

^aRatio of income to US Census Bureau federal poverty level¹⁶ defined as poor (≤ 0.99), near poor (1.00–1.99), or not poor (≥ 2.00).

^bDefined as ≤ 2500 g.

^cDefined as weight in kilograms divided by height in meters squared (≤ 24.9 = normal or underweight, 25.0–29.9 = overweight, ≥ 30.0 = obese).

^dData for children and adolescents not included in the analysis.