Respiratory symptoms in relation to environmental tobacco smoke (ETS) exposure in men and women
| No cough, phlegm or asthma | Asthma diagnosis | Chronic bronchitis* | Chronic phlegm without cough | Chronic dry cough | |||||
|---|---|---|---|---|---|---|---|---|---|
| N | N | OR (95% CI)† | N | OR (95% CI) | N | OR (95% CI) | N | OR (95% CI) | |
| *Chronic bronchitis was defined as combined chronic cough and phlegm. | |||||||||
| †All ORs are adjusted for age and dialect group. | |||||||||
| ‡ORs adjusted for adult home (no, past or current) and work (no, past or current) exposure. | |||||||||
| §Number of smokers for childhood ETS exposure is a semi-quantitative variable representing the minimum number of smokers. | |||||||||
| ¶ORs adjusted for childhood (no, 1+ smokers) and work (no, past or current) exposure. | |||||||||
| **ORs adjusted for childhood (no, 1+ smokers) and adult home (no, past or current) exposure. | |||||||||
| Men (N = 7759) | |||||||||
| Childhood home ETS exposure‡ | |||||||||
| None | 2292 | 112 | 1.00 | 11 | 1.00 | 50 | 1.00 | 11 | 1.00 |
| 1+ smokers§ | 4791 | 234 | 0.82 (0.60 to 1.13) | 41 | 0.93 (0.39 to 2.23) | 169 | 1.40 (0.92 to 2.11) | 48 | 2.24 (1.00 to 5.03) |
| Adult home ETS exposure¶ | |||||||||
| None | 2862 | 129 | 1.00 | 11 | 1.00 | 70 | 1.00 | 19 | 1.00 |
| Past or current | 4221 | 217 | 1.27 (0.94 to 1.72) | 41 | 2.52 (1.06 to 6.00) | 149 | 1.16 (0.80 to 1.68) | 40 | 0.87 (0.44 to 1.71) |
| Work ETS exposure** | |||||||||
| None | 4229 | 195 | 1.00 | 25 | 1.00 | 112 | 1.00 | 32 | 1.00 |
| Past or current | 2854 | 151 | 1.15 (0.92 to 1.43) | 27 | 1.46 (0.84 to 2.53) | 107 | 1.35 (1.03 to 1.77) | 27 | 1.16 (0.69 to 1.94) |
| Women (N = 25921) | |||||||||
| Childhood home ETS exposure‡ | |||||||||
| None | 8719 | 361 | 1.00 | 25 | 1.00 | 133 | 1.00 | 25 | 1.00 |
| 1+ smokers§ | 15340 | 797 | 1.17 (1.01 to 1.36) | 72 | 1.27 (0.77 to 2.10) | 348 | 1.21 (0.96 to 1.52) | 101 | 2.16 (1.31 to 3.55) |
| Adult home ETS exposure¶ | |||||||||
| None | 5773 | 240 | 1.00 | 10 | 1.00 | 78 | 1.00 | 19 | 1.00 |
| Past or current | 18286 | 918 | 1.06 (0.90 to 1.25) | 87 | 2.34 (1.15 to 4.76) | 403 | 1.43 (1.09 to 1.88) | 107 | 1.09 (0.63 to 1.88) |
| Work ETS exposure** | |||||||||
| None | 20096 | 904 | 1.00 | 74 | 1.00 | 353 | 1.00 | 92 | 1.00 |
| Past or current | 3963 | 254 | 1.40 (1.21 to 1.62) | 23 | 1.60 (0.99 to 2.57) | 128 | 1.70 (1.38 to 2.09) | 34 | 1.86 (1.25 to 2.78) |