TABLE 3.
Prevalence of Ever Having Asthma With Symptoms in the Previous Year and Association With Smoke-Free Laws Among Nonsmoking Youth Aged 3 to 15 Years, NHANES 1999–2006
| Weighted Percentage (SE) Living in a County |
OR (95% CI) |
|||
|---|---|---|---|---|
| Without a Smoke-Free Law (n = 6573) | With a Smoke-Free Law (n = 2227) | Unadjusted | Adjusteda | |
| Ever asthma with current symptomsb | 7.5 (0.5) | 5.9 (0.7) | 0.79 (0.58–1.07) | 0.74 (0.53–1.03) |
| Asthmatic symptomsb | 12.1 (0.6) | 8.4 (1.1) | 0.69 (0.50–0.95)c | 0.67 (0.48–0.93)c |
| Persistent wheeze | 6.4 (0.4) | 3.9 (0.7) | 0.57 (0.36–0.92)c | 0.58 (0.37–0.89)c |
| Chronic night cough | 3.1 (0.4) | 1.6 (0.4) | 0.57 (0.35–0.95)c | 0.43 (0.24–0.76)c |
| Wheeze-medication use | 9.3 (0.5) | 7.2 (0.9) | 0.76 (0.56–1.05) | 0.79 (0.58–1.05) |
| Persistent ear infections (≥3) (1999–2004) | 6.1 (0.5) | 3.4 (0.7) | 0.57 (0.33–0.98)c | 1.01 (0.50–2.05) |
a
Adjusted for survey cycle, gender, age, race, ratio of income to poverty, region, health insurance, mother's age at birth, mother's smoking status during pregnancy, low birth weight, BMI, and household size.
b
Persistent wheeze, chronic night cough, or wheeze-medication use.
c
Adjusted OR was additionally adjusted for ever attending daycare.