Odds ratios (OR) and 95% confidence intervals (CI) for reporting lifetime asthma among children aged 5–17 for exposure and covariates.

aModel 1 was unadjusted.bModel 2 was adjusted for sex, age, race/ethnicity, poverty, education and child weight status.cModel 3 was adjusted for sex, age, race/ethnicity, poverty, education and child weight status, mother's health status and household smoking.dModel 4 was adjusted for sex, age, race/ethnicity, poverty, education and child weight status, mother's health status and household smoking, children's TV viewing and physical activity.