2008 sample | 2017-A sample | 2017-B sample | |||||||
---|---|---|---|---|---|---|---|---|---|
High school students (n = 33,253) | Apprentices (n = 4,564) | SMD | High school students (n = 11,093) | Apprentices (n = 877) | SMD | High school students (n = 11,769) | Apprentices (n = 949) | SMD | |
Age (mean) | 17.3 | 17.4 | 0.17 | 17.4 | 17.4 | 0.04 | 17.4 | 17.4 | 0.02 |
Daily smoking (Yes) | 24.5 | 49.9 | 0.54 | 22.1 | 44.8 | 0.50 | 21.9 | 46.8 | 0.54 |
Age at smoking initiation (mean) | 13.7 | 13.2 | 0.20 | 14.6 | 14.0 | 0.30 | 14.5 | 13.9 | 0.32 |
Age at transition to daily smoking (mean) | 15.0 | 14.5 | 0.34 | 15.3 | 14.9 | 0.35 | 15.2 | 14.7 | 0.41 |
Gender (Boys) | 47.9 | 70.2 | 0.47 | 49.0 | 73.7 | 0.52 | 49.4 | 73.8 | 0.52 |
Parental occupational status | 0.41 | 0.47 | 0.46 | ||||||
Low | 10.3 | 16.2 | 0.17 | 9.6 | 14.5 | 0.15 | 9.8 | 15.2 | 0.16 |
Disadvantaged | 31.0 | 44.0 | 0.27 | 34.6 | 46.0 | 0.23 | 34.6 | 46.5 | 0.25 |
Intermediate | 16.2 | 14.2 | 0.05 | 23.8 | 26.2 | 0.06 | 23.8 | 25 | 0.03 |
Advantaged | 29.6 | 20.3 | 0.22 | 21.6 | 11.9 | 0.26 | 21.5 | 10.6 | 0.30 |
High | 12.8 | 5.3 | 0.26 | 10.5 | 1.4 | 0.39 | 10.4 | 2.6 | 0.32 |
Parents living together (Yes) | 72.0 | 62.7 | 0.20 | 64.6 | 54.9 | 0.20 | 64.8 | 54.5 | 0.21 |
Living alone (Yes) | 9.9 | 10.9 | 0.03 | 8.3 | 9.9 | 0.06 | 8.0 | 12.4 | 0.15 |
Suicide attempt (Yes) | 1.7 | 3.2 | 0.10 | 2.5 | 2.6 | 0.01 | 2.5 | 4.1 | 0.09 |
Grade repetition (Yes) | 39.1 | 70.3 | 0.66 | 26.3 | 53.1 | 0.57 | 26.6 | 55.8 | 0.62 |
Cannabis use in the past month (Yes) | 23.1 | 32.7 | 0.22 | 19.7 | 28.7 | 0.21 | 19.6 | 28.8 | 0.22 |
Alcohol use in the past month (Yes) | 76.9 | 83.3 | 0.16 | 66.0 | 75.4 | 0.21 | 65.6 | 78.7 | 0.29 |
Father smokes (Yes) | 35.6 | 46.6 | 0.22 | 32.6 | 45.3 | 0.26 | |||
Mother smokes (Yes) | 30.4 | 42.4 | 0.25 | 29.5 | 43.4 | 0.29 | |||
Sum of money received1 | 1.60 | 1.74 | |||||||
Quintile 1 | 23.7 | 4.6 | 0.57 | 25.8 | 2.5 | 0.71 | |||
Quintile 2 | 21.6 | 3.1 | 0.58 | 19.1 | 1.9 | 0.58 | |||
Quintile 3 | 23.3 | 3.0 | 0.63 | 19.6 | 2.1 | 0.58 | |||
Quintile 4 | 21.0 | 5.9 | 0.45 | 21.3 | 3.0 | 0.58 | |||
Quintile 5 | 10.3 | 83.3 | 2.14 | 14.3 | 90.5 | 2.36 |