Table 4 ORs (and 95% CIs) of becoming a drinker according to smoking-related variables.
Smoking behavior parameters | Drinker, n = 1927 (%) | Non-drinker, n = 8910 (%) | Crude OR (95% CI) | p value | Adjusted OR (95% CI)a | p value |
|---|---|---|---|---|---|---|
Number of cigarettes smoked per day | ||||||
Non-smoker | 775 (40.2%) | 7055 (79.2%) | 1.00 (referent) | – | 1.00 (referent) | – |
< 10 | 156 (8.1%) | 445 (5.0%) | 3.19 (2.62–3.89) | < 0.001 | 2.31 (1.85–2.88) | < 0.001 |
10– | 299 (15.5%) | 724 (8.1%) | 3.76 (3.22–4.39) | < 0.001 | 2.04 (1.72–2.43) | < 0.001 |
20– | 697 (36.2%) | 686 (7.7%) | 9.25 (8.13–10.52) | < 0.001 | 4.88 (4.20–5.66) | < 0.001 |
p value for trend | < 0.001 | < 0.001 | ||||
Duration of smoking (years) | ||||||
Non-smoker | 775 (40.2%) | 7055 (79.2%) | 1.00 (referent) | – | 1.00 (referent) | – |
< 20 | 222 (11.5%) | 774 (8.7%) | 2.61 (2.21–3.08) | < 0.001 | 1.47 (1.22–1.77) | < 0.001 |
20– | 558 (29.0%) | 701 (7.9%) | 7.25 (6.34–8.28) | < 0.001 | 4.30 (3.69–5.02) | < 0.001 |
35– | 372 (19.3%) | 380 (4.2%) | 8.91 (7.59–10.47) | < 0.001 | 4.89 (4.04–5.92) | < 0.001 |
p value for trend | < 0.001 | < 0.001 | ||||
Age at starting smoking (years) | ||||||
Non-smoker | 775 (40.2%) | 7055 (79.2%) | 1.00 (referent) | – | 1.00 (referent) | – |
25– | 713 (37.0%) | 1481 (16.6%) | 4.38 (3.90–4.92) | < 0.001 | 2.66 (2.33–3.04) | < 0.001 |
< 25 | 439 (22.8%) | 374 (4.2%) | 10.69 (9.14–12.50) | < 0.001 | 4.96 (4.16–5.92) | < 0.001 |
p value for trend | < 0.001 | < 0.001 | ||||
Cumulative amount of smoking (pack-years) | ||||||
Non-smoker | 775 (40.2%) | 7055 (79.2%) | 1.00 (referent) | – | 1.00 (referent) | – |
< 15 | 308 (16.0%) | 967 (10.8%) | 2.90 (2.50–3.36) | < 0.001 | 1.74 (1.48–2.06) | < 0.001 |
15– | 342 (17.7%) | 435 (4.9%) | 7.16 (6.10–8.40) | < 0.001 | 4.27 (3.55–5.13) | < 0.001 |
30– | 502 (26.1%) | 453 (5.1%) | 10.09 (8.71–11.69) | < 0.001 | 5.17 (4.36–6.14) | < 0.001 |
p value for trend | < 0.001 | < 0.001 | ||||
