TABLE 4

Exposures to Tobacco and Indoor Particles, According to Group Assignment, During Study

CharacteristicBaseline6 mo12 moP
Serum cotinine level, mean, ng/mL.738
    Intervention group (n = 110)1.11.11.1
    Control group (n = 115)1.21.11.0
Hair cotinine level, mean, ng/mg.984
    Intervention group (n = 110)0.10.120.15
    Control group (n = 115)0.10.110.15
Air nicotine level, μg.191
    Intervention group (n = 110)3.12.5
    Control group (n = 115)2.52.7
No. of particles of >0.3 μm, mean ± SD, 106/ft3.026a
    Intervention group (n = 110)4.02.53.0
    Control group (n = 115)4.74.64.4
No. of particles of >5 μm, mean ± SD, 106/ft3.219a
    Intervention group (n = 110)0.00330.00290.0027
    Control group (n = 115)0.00370.00280.0024
  • a Test of differences in group means, including baseline particle levels.