Table 1.
Sample description
| Variable | M (SD)/ n (%) | |
|---|---|---|
| Students (n=12,246) | ||
| Age | 15.66 (0.83) | |
| Gender female | 50.9% | |
| Prevalence cigarettes 30 days | 38.6% | |
| Prevalence alcohol 30 days | 82.5% | |
| Prevalence episodic heavy drinking 30 days | 60.9% | |
| Prevalence cannabis 12 months | 17.7% | |
| Prevalence illegal drugs other than cannabis lifetime | 11.5% | |
| Schools (n=552) | ||
| City size | ||
| Large | 250 (45.3%) | |
| Small | 277 (50.2%) | |
| Missing | 25 (4.5%) | |
| School size | ||
| Large | 239 (43.3%) | |
| Small | 293 (53.1%) | |
| Missing | 20 (3.6%) | |
| Class size | ||
| Large | 287 (52.0%) | |
| Small | 265 (48.0%) | |
| Missing | - | |
| School environment | ||
| Disadvantaged | 217 (39.3%) | |
| Not disadvantaged | 314 (56.8%) | |
| Missing | 21 (3.8%) | |
| School substance use policies | ||
| Non-restrictive | 197 (35.7%) | |
| Restrictive | 334 (60.5%) | |
| Missing | 21 (3.8%) | |