Effect of time and sociodemographic characteristics on the prevalence and incidence of cannabinoid use in Manitoba, 2004/05–2014/15
| Variable | Relative rate (95% CI) | |
|---|---|---|
| Prevalence | Incidence | |
| Change in annual rate | 1.15 (1.14–1.16) | 1.09 (1.08–1.10) |
| Female v. male sex | 1.38 (1.30–1.46) | 1.33 (1.23–1.42) |
| Age | ||
| ≤ 18 v. ≥ 65 | 0.03 (0.02–0.04) | 0.04 (0.03–0.06) |
| 19–45 v. ≥ 65 | 0.96 (0.88–1.06) | 0.82 (0.74–0.91) |
| 46–64 v. ≥ 65 | 2.28 (2.09–2.49) | 1.70 (1.53–1.89) |
| Urban v. rural residence | 1.17 (1.10–1.24) | 1.11 (1.04–1.19) |
| Socioeconomic status | ||
| Low v. high | 0.62 (0.55–0.71) | 0.79 (0.68–0.92) |
| Mid-low v. high | 0.73 (0.66–0.80) | 0.84 (0.74–0.95) |
| Middle v. high | 0.92 (0.89–1.08) | 1.06 (0.94–1.19) |
Note: CI = confidence interval.