Table 2.
Baseline Drink-Year Quartile | Unadjusted Model* RR (95% CI), p value | Adjusted Model** RR (95% CI), p value |
---|---|---|
Non-drinkers | Reference | Reference |
Lowest quartile (≤40.7) | 1.13 (0.55 - 2.33), p = 0.73 | 1.43 (0.68 - 2.98), p = 0.34 |
2nd quartile (40.8 - 110.0) | 1.31 (0.68 - 2.52), p = 0.42 | 1.75 (0.89 - 3.42), p = 0.10 |
3rd quartile (110.1 - 138.0) | 1.27 (0.63 - 2.54), p = 0.50 | 1.82 (0.89 - 3.74), p = 0.10 |
Highest quartile (>138.0) | 1.49 (0.77 - 2.86), p = 0.24 | 2.29 (1.15 - 4.54), p = 0.018 |
The reference category was non-drinkers.
Unadjusted Cox proportional hazards model.
Cox proportional hazards model adjusting for cigarette pack-years, depressive symptoms and community
In analyses stratified by gender, comparing highest baseline drink-year quartile to non-drinkers, adjusted RRmen = 2.93 (95% CI = 0.79 - 10.81, p = 0.11) and adjusted RRwomen = 1.66 (95% CI = 0.50 - 5.51, p = 0.41).
We created two education strata (high education = primary or secondary studies vs. low education = can read or write or illiterate). In analyses stratified by education, comparing highest baseline drink-year quartile to non-drinkers, adjusted RRhigh education = 2.19 (95% CI = 0.81 - 5.94, p = 0.13) and adjusted RRlow education = 2.25 (95% CI = 0.86 - 5.85, p = 0.097).
In an analysis of daily number of drinks at baseline (rather than drink-years), when those in the highest category (>5 drinks/day) were compared to non-drinkers, RR = 1.94 (95% CI = 0.26 - 14.67, p = 0.52). When those who had 3 - 5 drinks/day were compared to non-drinkers, RR = 2.19 (95% CI = 0.66 - 7.31, p = 0.20). When those who had 1 - 2 drinks/day were compared to non-drinkers, RR = 1.30 (95% CI = 0.78 - 2.17, p = 0.31).