Table 3.

Adjusted Odds Ratiosa} and 95% Confidence Interval for ETS Exposure, Ages 2 Months to 5 Years

Household Exposure: Zero Is the Referent Group
Total2 Months–2 Years3–5 Years
Diagnosed asthma
 1–191.1  (0.8, 1.6)0.9  (0.6, 1.5)1.2  (0.7, 2.1)
 ≥202.1  (1.4, 3.2)2.0  (1.1, 3.4)2.1  (1.2, 3.5)
Chronic bronchitis
 1–191.2  (0.8, 1.7)1.3  (0.8, 1.9)1.2  (0.7, 2.1)
 ≥201.8  (1.1, 3.0)2.5  (1.6, 4.1)1.3  (0.6, 2.9)
In the last 12 months 3 or more episodes of wheezing
 1–191.4  (1.1, 1.9)1.7  (1.2, 2.5)1.2  (0.8, 1.8)
 ≥201.9  (1.2, 3.1)2.7  (1.7, 4.2)1.2  (0.6, 2.4)
 ̅S̅m̅o̅k̅i̅n̅g̅ ̅D̅u̅r̅i̅n̅g̅ ̅P̅r̅e̅g̅n̅a̅n̅c̅y̅:̅ ̅N̅o̅t̅ ̅E̅x̅p̅o̅s̅e̅d̅ ̅I̅s̅ ̅t̅h̅e̅ ̅R̅e̅f̅e̅r̅e̅n̅t̅ ̅G̅r̅o̅u̅p̅ ̅
Total2 Months–2 Years3–5 Years
Diagnosed asthma1.8  (1.3, 2.6)1.7  (1.1, 2.6)1.7  (1.1, 2.8)
Chronic bronchitis1.5  (1.1, 2.0)2.2  (1.6, 3.0)1.0  (0.6, 1.8)
In the last 12 months 3 or more episodes of wheezing1.8  (1.4, 2.4)2.1  (1.5, 2.9)1.3  (0.8, 2.0)
  • a Adjusted for age, sex, race/ethnicity, birth weight, day care, family history of allergy, breastfeeding, education of head of household, household size.