Table 4 Adjusted odds ratios in the ordinal logistic regression models for frequency of substance use by number of behaviours
| Â | AOR (95% CI) | p-value |
|---|---|---|
Marijuanai | Â | Â |
  1 (only marijuana) | 1 |  |
  2 | 1.66 (.82-3.39) | 0.160 |
  3 | 3.19 (1.66-6.13) | 0.001 |
Tobaccoii | Â | Â |
  1 (only tobacco) | 1 |  |
  2 | 2.18 (1.32-3.60) | 0.003 |
  3 | 5.53 (3.15-9.74) | <0.001 |
Binge drinkingiii | Â | Â |
  1 (only binge drinking) | 1 |  |
  2 | 3.58 (2.18-5.87) | <0.001 |
  3 | 7.01 (4.42-11.10) | <0.001 |