Table 3 Probabilities of transition between drug use in the past month, considering the changes over time
11–12 years | Transition from baseline to follow-up | Intervention | Control | |||||
|---|---|---|---|---|---|---|---|---|
N | % | N | % | OR | 95%CI | p | ||
Tobacco | non-use to use | 2/295 | 0.7 | 0/384 | 0.0 | Non-estimable | Non-estimable | Non-estimable |
use to non-use | 0/1 | 0.0 | 0/0 | 0.0 | ||||
Alcohol | non-use to use | 8/232 | 3.4 | 7/331 | 2.1 | 1.77 | 0.46;6.83 | 0.409 |
use to non-use | 8/19 | 42.1 | 5/18 | 27.8 | 2.49 | 0.45;13.73 | 0.296 | |
Binge drinking | non-use to use | 8/214 | 3.7 | 8/320 | 2.5 | 1.53 | 0.50;4.68 | 0.453 |
use to non-use | 5/12 | 41.7 | 2/5 | 40.0 | 0.96 | 0.10;9.04 | 0.971 | |
Marihuana | non-use to use | 2/249 | 0.8 | 4/377 | 1.1 | Non-estimable | Non-estimable | Non-estimable |
use to non-use | 0/0 | 0.0 | 1/1 | 100.0 | ||||
Inhalants | non-use to use | 3/244 | 1.2 | 5/377 | 1.3 | Non-estimable | Non-estimable | Non-estimable |
use to non-use | 1/2 | 50.0 | 1/1 | 100.0 | ||||
13–15 years | ||||||||
Tobacco | non-use to use | 11/430 | 2.6 | 8/530 | 1.5 | 1.70 | 0.68;4.26 | 0.259 |
use to non-use | 7/11 | 63.6 | 8/17 | 47.1 | 2.02 | 0.42;9.62 | 0.378 | |
Alcohol | non-use to use | 38/311 | 12.2 | 36/380 | 9.5 | 1.39 | 0.80;2.42 | 0.241 |
use to non-use | 26/59 | 44.1 | 28/80 | 35.0 | 1.39 | 0.65;2.94 | 0.393 | |
Binge drinking | non-use to use | 17/300 | 5.7 | 36/379 | 9.5 | 0.57 | 0.31;1.08 | 0.084 |
use to non-use | 19/40 | 47.5 | 18/45 | 40.0 | 1.28 | 0.53;3.12 | 0.583 | |
Marihuana | non-use to use | 12/425 | 2.8 | 10/539 | 1.9 | 1.53 | 0.66;3.59 | 0.323 |
use to non-use | 6/7 | 85.7 | 2/7 | 28.6 | 17.49 | 1.16;63.21 | 0.039 | |
Inhalants | non-use to use | 5/420 | 1.2 | 9/530 | 1.7 | 0.70 | 0.23;2.11 | 0.528 |
use to non-use | 8/10 | 80.0 | 6/10 | 60.0 | 2.56 | 0.34;19.18 | 0.358 | |