| Characteristic | Nonsmokers (n = 17 396) | ||
|---|---|---|---|
| Nonsusceptible to cigarette smoking, no. (%) (n =12 295) | Susceptible to cigarette smoking, no. (%) (n = 5 101) | p value* | |
| Sex | |||
| Female | 6 485 (68.5) | 2 672 (31.5) | 0.003 |
| Male | 5 810 (71.9) | 2 429 (28.1) | 0.003 |
| Grade | |||
| 9 | 3 503 (66.8) | 1 729 (33.2) | < 0.0001 |
| 10 | 3 483 (67.5) | 1 551 (32.5) | < 0.0001 |
| 11 | 3 052 (73.0) | 1 128 (27.0) | < 0.0001 |
| 12 | 2 257 (75.3) | 693 (24.7) | < 0.0001 |
| Province† | |||
| Atlantic | 4 279 (70.9) | 1 625 (29.1) | 0.2 |
| Quebec | 1 139 (72.2) | 387 (27.8) | 0.2 |
| Ontario | 2 062 (69.2) | 915 (30.8) | 0.2 |
| Saskatchewan | 1 501 (68.9) | 706 (31.1) | 0.2 |
| Alberta | 1 498 (70.0) | 659 (30.0) | 0.2 |
| British Columbia | 1 816 (71.5) | 809 (28.5) | 0.2 |
| Race† | |||
| White | 9 317 (69.6) | 3 774 (30.4) | 0.2 |
| Non-white | 2 910 (71.4) | 1 284 (28.6) | 0.2 |
| Overall self-esteem score† | |||
| ≤ 8 | 3 735 (60.8) | 2 318 (39.2) | < 0.0001 |
| 9-11 | 6 400 (73.4) | 2 258 (26.6) | < 0.0001 |
| ≥ 12 | 2 126 (79.2) | 509 (20.8) | < 0.0001 |
| Academic performance† | |||
| Levels 3 and 4 | 10 034 (71.3) | 3 792 (28.7) | < 0.0001 |
| Level 3 | 1 611 (66.3) | 914 (33.7) | < 0.0001 |
| Level 2 and lower | 363 (59.0) | 256 (41.0) | < 0.0001 |
| Any family member smoking† | |||
| No | 7 442 (74.1) | 2 548 (25.9%) | < 0.0001 |
| Yes | 4 246 (64.4) | 2 245 (35.6%) | < 0.0001 |
*Rao-Scott χ2 test of association.
†Some missing values for this variable in the study population.