Exposure to tobacco smoke |
In utero exposure | No | 12.5 | 0.041 | 23.3 | 0.199 | 19.7 | 0.032 |
Yes | 15.6 | 25.7 | | 23.6 |
Maternal ETS at age 7–8 years | No | 12.0 | 0.008 | 22.0 | 0.002 | 19.2 | 0.005 |
Yes | 15.8 | | 27.5 | | 24.0 | |
Maternal ETS at age 16–17 years | No | 12.4 | 0.023 | 22.6 | 0.005 | 19.5 | 0.009 |
Yes | 16.0 | | 27.9 | | 24.2 | |
Continuous maternal ETS | No | 12.5 | 0.002 | 22.9 | 0.002 | 19.9 | 0.016 |
Yes | 18.1 | | 30.2 | | 25.1 | |
Paternal ETS at age 7–8 years | No | 12.4 | 0.352 | 22.9 | 0.398 | 19.3 | 0.018 |
Yes | 13.9 | | 24.6 | | 23.9 | |
Paternal ETS at age 16–17 years | No | 12.9 | 0.636 | 23.3 | 0.293 | 19.9 | 0.150 |
Yes | 13.7 | | 25.5 | | 22.8 | |
Continuous paternal ETS | No | 13.3 | 0.847 | 23.9 | 0.972 | 20.2 | 0.050 |
Yes | 12.8 | | 24.1 | | 26.2 | |
Smoking habits |
Daily smoking | No | 12.9 | 0.025 | 22.8 | <0.001 | 19.3 | <0.001 |
Yes | 18.0 | | 36.8 | | 34.7 | |