Table 2: Weighted prevalence and logistic regression analysis* of variables related to the odds of driving within an hour of drinking at least 1 drink among 10 411 grade 11-12 students.
| Variable | In last 30 d | Ever | ||
|---|---|---|---|---|
| Weighted prevalence (95% CI), % | Odds ratio (99% CI) | Weighted prevalence (95% CI), % | Odds ratio (99% CI) | |
| Canada (total) | 3.5 (2.8-4.2) | 9.1 (7.9-10.3) | ||
| Sex | ||||
| Female | 2.7 (1.8-3.5) | 0.516 (0.264-1.011) | 6.8 (5.3-8.2) | 0.477 (0.290-0.786) |
| Male | 4.3 (3.2-5.4) | Reference | 11.4 (9.4-13.4) | Reference |
| Grade | ||||
| 11 | 2.9 (2.2-3.6) | Reference | 7.1 (6.1-8.1) | Reference |
| 12 | 4.2 (3.2-5. 1) | 1.406 (0.883-2.240) | 11.3 (9.2-13.4) | 1.642 (1.115-2.417) |
| Ethnicity | ||||
| White | 3.7 (2.7-4.6) | Reference | 10.4 (8.5-12.3) | Reference |
| Black | † | 2.645 (0.730-9.584) | 7.1(2.6-11.5)‡ | 1.096 (0.409-2.940) |
| Asian | 1.6 (0.7-2.5)‡ | 1.000 (0.417-2.399) | 4.4(2.8-5.9)‡ | 0.850 (0.440-1.643) |
| Latin American | † | 5.238 (0.278-98.553) | 16.7(6.5-27.0)‡ | 2.658 (0.405-17.433) |
| Aboriginal | 5.8 (2.6-9.1)‡ | 1.441 (0.518-4.007) | 14.7 (9.5-19.9)‡ | 1.031 (0.529-2.008) |
| Other | † | 2.433 (0.743-7.968) | 10.3(4.7-15.3)‡ | 1.694 (0.549-5.234) |
| Province | ||||
| British Columbia | 4.5 (3.1-6.0) | 1.583 (0.681-3.677) | 12.4 (9.4-15.4) | 2.065 (1.125-3.791) |
| Alberta | 3.4 (2.2-4.5)‡ | 1.339 (0.558-3.214) | 9.5 (7.2-11.8) | 1.699 (1.033-2.795) |
| Saskatchewan | 9.8 (4.9-14.8)‡ | 3.679 (1.472-9.194) | 18.5 (11.4-25.6)‡ | 2.926 (1.510-5.670) |
| Manitoba | 2.4 (1.5-3.4)‡ | 0.630 (0.254-1.564) | 11.1(5.8-16.4)‡ | 1.474 (0.625-3.477) |
| Ontario | 2.3 (1.5-3.3)‡ | Reference | 6.3 (4.4-8.2) | Reference |
| Quebec | † | 1.007 (0.367-2.764) | 9.0 (7.0-11.0) | 1.213 (0.656-2.243) |
| Nova Scotia | 4.0 (2.3-5.6)‡ | 1.109 (0.433-2.839) | 10.0 (7.9-12.1) | 1.299 (0.796-2.120) |
| Prince Edward Island | 3.8 (2.7-4.9) | 1.174 (0.562-2.458) | 11.7 (8.3-15.0) | 1.462 (0.799-2.674) |
| Newfoundland and Labrador | 5.5 (4.4-6.5) | 1.716 (0.827-3.563) | 13.9(9.2-18.6)‡ | 1.828 (1.042-3.208) |
| School socioeconomic status | ||||
| Low median | 3.6 (2.6-4.6) | Reference | 10.5(8.0-13.0) | Reference |
| High median | 3.5 (2.5-4.4) | 1.219 (0.605-2.457) | 8.0 (6.7-9.4) | 0.889 (0.518-1.526) |
| Urban | ||||
| Yes | 2.6 (1.9-3.3) | Reference | 7.2 (5.9-8.5) | Reference |
| No | 7.6 (5.9-9.4) | 2.326 (1.312-4.125) | 17.6 (13.7-21.4) | 1.712 (1.163-2.520) |
| Drinking behaviour | ||||
| Does not drink | † | Reference | † | Reference |
| Drinks but no binging | 0.7 (0.4-1.0)‡ | 1.113 (0.146-8.470) | 2.9 (1.6-4.2)‡ | 2.391 (0.527-10.839) |
| Binge drinks | 5.9 (4.9-7.0) | 8.559 (1.188-61.655) | 15.1 (13.0-17.1) | 12.725 (3.284-49.308) |
Note: CI = confidence interval.
*All logistic regressions were conducted with the use of a complete-case methods approach, so the results presented here are among all cases with complete data.
†High sampling variability/insufficient sample size; data suppressed.
‡Moderate sampling variability; interpret with caution.