Table 1.

Demographic characteristics of the study population

Variable	N (%)
Number of children	565
Number of households	277
Gender
Female	257 (45.5)
Male	308 (54.5)
Age (yrs)
0–6	145 (25.7)
6–12	246 (43.5)
12–17	174 (30.8)
Physician-diagnosed asthma prevalence
Female	13 (5.1)
Male	49 (15.9)
Total	62 (11.0)
Physician-diagnosed asthma or medication for wheeze
Female	40 (7.1)
Male	88 (15.6)
Total	128 (22.7)
Child lives on a farm	167 (29.6)
Child works around livestock	40 (7.1)
Cockroach problem in the home	12 (2.1)
Child’s proximity to nearest CAFO
≤1600 m	107 (18.9)
>1600 m to ≤3200 m	320 (37.7)
>3200 m to ≤4800 m	203 (35.9)
>4800 m	42 (7.4)
Highest education achieved by parents
Did not complete high school	6 (2.2)
High school or GED	59 (21.3)
Some college	121 (43.7)
College grad or above	91 (32.9)
Indoor dog and/or cat	242 (42.8)
Parental history of asthma	45 (8.0)
Parental smoking in the home	53 (9.4)
Parents raises livestock	125 (22.1)
Parents income <$40,000	132 (23.4)
Physician-diagnosed allergies	111 (19.7)
Presence of mold in the home	88 (15.6)
Premature birth (<37 weeks)	62 (11.0)
Respiratory illness <2 years	158 (28.0)