Table 2. Hazard ratio (HR)* of lung cancer by level of alcohol consumption.
| Person-years | No. of deaths | HR1 | (95% CI) | HR2 | (95% CI) | HR3 | (95% CI) | |
| Never drinkers | 52,956 | 91 | 1.00 | (reference) | 1.00 | (reference) | 1.00 | (reference) |
| Ever drinkers | 215,508 | 286 | 0.90 | (0.71-1.14) | 0.96 | (0.73-1.26) | 1.03 | (0.73-1.46) |
| Current drinkers (ethanol intake) | ||||||||
| ≤24.9 g/day | 97,334 | 113 | 0.81 | (0.61-1.07) | 0.81 | (0.59-1.11) | 0.90 | (0.60-1.34) |
| 25.0-49.9 g/day | 71,863 | 85 | 0.82 | (0.61-1.11) | 0.90 | (0.64-1.26) | 0.99 | (0.65-1.50) |
| ≥50.0 g/day | 29,679 | 38 | 0.97 | (0.66-1.43) | 0.98 | (0.64-1.50) | 1.08 | (0.63-1.83) |
| Ex-drinkers | 16,633 | 50 | 1.39 | (0.98-1.96) | 1.68 | (1.16-2.45) | 1.69 | (1.03-2.76) |
| P for trend 1† | 0.61 | 0.92 | 0.74 | |||||
| P for trend 2‡ | 0.38 | 0.32 | 0.58 | |||||
* : HR1 is adjusted for age, smoking and family history of lung cancer. HR2 is further adjusted for intake of green-leafy vegetables, oranges and fruits other than oranges. HR3 means the relative risk with adjustment for the same covariates as those used for calculation of HR2 after cases who died in first five years of follow-up were excluded.
† : P for trend among current drinkers. The test for linear trends includes never drinkers.
‡ : P for trend among current drinkers. The test for linear trends excudes never drinkers.
CI: confidence interval