TABLE 2

Baseline Exposure to Environmental Tobacco Smoke and Indoor Airborne Particles According to Group Assignment

CharacteristicsIntervention Group (N = 110)Control Group (N = 115)P
Tobacco exposure
    No. of cigarettes smoked around house per d, mean ± SD12.9 ± 1.813.3 ± 2.2.716
    Serum cotinine level, mean ± SD, ng/mL1.18 ± 3.91.23 ± 3.3.622
    Hair cotinine level, mean ± SD, ng/mg0.14 ± 3.80.14 ± 3.5.970
No. of airborne particles, mean ± SD, 106/ft3
    Particles of >0.3 μm4.0 ± 2.564.7 ± 2.58.003
    Particles of >5 μm0.003 ± 2.310.004 ± 2.14.154