Table 1 Prevalence of past 30-day cannabis usea among US adults with and without use of other substancesb, National Survey on Drug Use and Health, 2017–2018
From: Cannabis-only use in the USA: prevalence, demographics, use patterns, and health indicators
No cannabis use (last 30 days) N = 73,437 Wt% (95% CI) | Cannabis use with other substance use N = 11,163 Wt% (95% CI) | Cannabis-only use N = 980 Wt% (95% CI) | Row total | |
|---|---|---|---|---|
18–25 | 77.8 (77.2, 78.4) | 20.2 (19.7, 20.9) | 2.0 (1.8, 2.2) | 100% |
26–49 | 87.7 (87.3, 88.2) | 11.6 (11.1, 11.9) | 0.7 (0.6, 0.9) | 100% |
50 and older | 95.1 (94.7, 95.5) | 4.3 (3.8, 4.7) | 0.6 (0.5, 0.8) | 100% |
All adults | 89.7 (89.4, 90.0) | 9.4 (9.1, 9.7) | 0.9 (0.8, 1.0) | 100% |