Table 2.
Prevalence of any use and weekly/daily substance use in the past-year according to data collection cycle, Nicotine Dependence in Teens study, Montréal, Canada, 2007-21
|
Any use in past-year % (95% CI)* |
Weekly/daily use in past-year % (95% CI)* |
|||||||
|---|---|---|---|---|---|---|---|---|
| Cycle 21 | Cycle 22 | Cycle 23 | Cycle 24 | Cycle 21 | Cycle 22 | Cycle 23 | Cycle 24 | |
| (n=880) | (n=858) | (n=799) | (n=704) | (n=880) | (n=858) | (n=799) | (n=704) | |
| Cannabis | 44.3 | 43.8 | 40.3 | 40.9 | 19.4 | 18.3 | 17.5 | 23.1 |
| (41.8; 46.8) | (41.4; 46.3) | (37.9; 42.7) | (38.6; 43.2) | (17.5; 21.5) | (16.5; 20.3) | (15.7; 19.4) | (21.1; 25.1) | |
| Alcohol | 90.6 | 90.7 | 86.7 | 82.0 | 36.7 | 42.8 | 49.1 | 44.2 |
| (89.1; 92.0) | (89.2; 92.1) | (85.0; 88.3) | (80.2; 83.8) | (34.2; 39.1) | (40.4; 45.3) | (46.7; 51.6) | (41.9; 46.5) | |
| Binge drinking | 76.0 | 75.1 | 64.6 | 46.1 | 14.5 | 14.1 | 9.1 | 7.9 |
| (73.8; 78.1) | (72.9; 77.2) | (62.3; 67.0) | (43.8; 48.4) | (12.8; 16.3) | (12.4; 15.8) | (7.8; 10.6) | (6.7; 9.3) | |
| Combustible cigarettes | 47.1 | 45.0 | 35.6 | 26.1 | 27.3 | 25.4 | 18.0 | 11.9 |
| (44.6; 49.7) | (42.5; 47.4) | (33.3; 38.0) | (24.1; 28.2) | (25.1; 29.6) | (23.3; 27.6) | (16.2; 19.9) | (10.5; 13.5) | |
| E-cigarettes | NA | NA | 13.4 | 9.6 | NA | NA | 3.8 | 5.4 |
| (11.8; 15.2) | (8.2; 11.0) | (2.9; 4.8) | (4.4; 6.5) | |||||
⁎
Prevalence and 95% CI are weighted for non-response.
Note: Mean age of participants was 20.4, 24.0, 30.6 and 33.6 years in cycle 21, 22, 23 and 24, respectively.
NA: Not Applicable.