Table 3: Logistic regression of past-year cannabis use among Ontario middle and high school students by demographic and behavioural factors*.
| Factor | Model; OR (95% CI)† | |||
|---|---|---|---|---|
| Model 1, unadjusted | Model 2, adjusted‡ | Model 3, adjusted§ | Model 4, adjusted¶ | |
| Sex | ||||
| Male | 1 | 1 | 1 | |
| Female | 0.90 (0.73-1.13) | 0.93 (0.75-1.14) | 0.94 (0.73-1.19) | 0.91 (0.71-1.16) |
| Grade | ||||
| 7/8 | 1 | 1 | 1 | 1 |
| 9 | 3.65 (1.68-7.94) | 3.67 (1.67-8.05) | 1.63 (0.83-3.21) | 1.64 (0.85-3.19) |
| 10 | 10.63 (4.9-22.81) | 11.18 (5.17-24.16) | 3.77 (1.98-7.18) | 3.71 (1.96-7.04) |
| 11 | 17.24 (8.07-36.81) | 17.51 (8.13-37.69) | 3.75 (1.97-7.12) | 3.66 (1.94-6.92) |
| 12 | 19.26 (8.97-41.36) | 21.15 (9.83-45.51) | 3.87 (2.06-7.26) | 3.85 (2.07-7.16) |
| Ethnicity | ||||
| White | 1 | 1 | 1 | 1 |
| Black | 0.98 (0.68-1.41) | 1.16 (0.81-1.66) | 2.70 (1.77-4.11) | 2.67 (1.76-4.05) |
| East/South East Asian | 0.35 (0.26-0.49) | 0.43 (0.31-0.59) | 0.81 (0.58-1.14) | 0.77 (0.54-1.10) |
| South Asian | 0.29 (0.21-0.41) | 0.31 (0.22-0.44) | 0.94 (0.58-1.52) | 0.92 (0.56-1.50) |
| Other | 0.82 (0.67-1.01) | 1.01 (0.78-1.31) | 1.18 (0.81-1.72) | 1.16 (0.79-1.71) |
| Subjective socioeconomic status | ||||
| High | 1 | 1 | 1 | 1 |
| Low | 1.19 (0.98-1.43) | 1.13 (0.94-1.34) | 1.03 (0.85-1.26) | 1.01 (0.83-1.22) |
| Immigration status | ||||
| Nonimmigrant | 1 | 1 | 1 | 1 |
| Immigrant | 0.42 (0.32-0.56) | 0.48 (0.37-0.64) | 0.56 (0.39-0.79) | 0.55 (0.39-0.78) |
| Tobacco cigarette use in previous year | ||||
| No | 1 | 1 | 1 | |
| Yes | 25.18 (20.58-30.81) | 10.90 (8.60-13.83) | 10.10 (8.68-13.92) | |
| Alcohol use in previous year | ||||
| None/sip | 1 | 1 | 1 | |
| Occasional | 10.94 (8.24-14.52) | 5.42 (4.08-7.21) | 5.35 (4.01-7.13) | |
| Regular | 47.53 (35.53-63.58) | 14.84 (10.87-20.26) | 14.6 (10.8-19.89) | |
| Met physical activity recommendation | ||||
| No | 1.05 (0.88-1.25) | 1.10 (0.87-1.38) | ||
| Yes | 1 | 1 | ||
| Met screen time recommendation | ||||
| No | 1.07 (0.91-1.26) | 1.09 (0.82-1.45) | ||
| Yes | 1 | 1 | ||
| Met sleep duration recommendation | ||||
| No | 1.50 (1.25-1.81) | 1.21 (0.95-1.55) | ||
| Yes | 1 | 1 | ||
Note: CI = confidence interval, OR = odds ratio.
*Models compare past-year cannabis use to no use.
†Bolded values significant at p < 0.05.
‡Adjusted for sex, grade, ethnicity, socioeconomic status and immigration status.
§Adjusted for sex, grade, ethnicity, socioeconomic status, immigration status, tobacco cigarette use and alcohol use.
¶Adjusted for sex, grade, ethnicity, socioeconomic status, immigration status, tobacco cigarette use, alcohol use, and adherence to the physical activity, screen time and sleep duration recommendations.