Table 2.
Demographics of adults with past 30-day cannabisa use, with and without use of other substancesb, stratified by age, National Survey on Drug Use and Health, 2017–2018
| Cannabis use, past 30-day other substance use | Cannabis-only use | |||||
|---|---|---|---|---|---|---|
| 18–25 years old n = 5524 |
26–49 years old n = 4799 |
> = 50 years old n = 840 |
18–25 years old n = 536 |
26–49 years old n = 325 |
> = 50 years old n = 119 |
|
| Wt % (95% CI) | Wt % (95% CI) | Wt % (95% CI) | Wt % (95% CI) | Wt % (95% CI) | Wt % (95% CI) | |
| Sex | ||||||
| Male | 55.5 (53.9, 57.1) | 60.9 (59.0, 62.9) | 63.0 (57.6, 68.3) | 58.1 (52.1, 64.0) | 61.4 (54.4, 68.5) | 67.2 (56.7, 77.7) |
| Female | 44.5 (42.9, 46.0) | 39.7 (37.1, 41.0) | 37.0 (31.7, 42.4) | 41.9 (36.0, 47.9) | 38.6 (31.5, 45.6) | 32.8 (22.3, 43.3) |
| Race | ||||||
| Non-Hispanic (NH) White | 57.7 (56.1, 59.3) | 63.9 (62.0, 65.9) | 75.7 (72.3, 79.2) | 43.2 (37.6, 48.8) | 60.0 (53.5, 66.4) | 73.8 (62.5, 85.2) |
| NH Black | 14.9 (13.8, 16.1) | 15.6 (14.0, 17.2) | 12.5 (9.6, 15.5) | 24.4 (19.6, 29.3) | 15.7 (9.5, 21.9) | 13.1 (5.6, 20.6) |
| NH other | 7.5 (6.7, 8.4) | 7.3 (6.4, 8.3) | 5.7 (4.2, 7.1) | 9.6 (6.4, 12.7) | 6.9 (3.3, 10.5) | 2.7 (0.1, 5.6) |
| Hispanic | 19.8 (18.3, 21.3) | 13.2 (12.0, 14.4) | 6.1 (4.1, 8.1) | 22.8 (18.0, 27.6) | 17.4 (11.6, 23.3) | 10.3 (0.5, 20.0) |
| Education | ||||||
| < high school | 12.4 (11.0, 13.8) | 11.4 (10.3, 12.4) | 13.1 (10.3, 15.8) | 20.9 (16.8, 24.9) | 13.4 (7.2, 19.7) | 8.0 (0.1, 17.6) |
| High school graduate | 29.0 (27.5, 30.5) | 23.5 (21.9, 25.2) | 28.1 (24.2, 32.1) | 37.3 (32.1, 42.5) | 26.1 (19.5, 32.8) | 29.8 (19.1, 40.5) |
| Some college/associate degree | 44.7 (42.9, 46.5) | 34.8 (33.4, 36.3) | 30.0 (25.5, 34.6) | 36.2 (31.2, 41.2) | 38.6 (30.8, 46.4) | 40.2 (27.6, 52.8) |
| College graduate | 13.9 (12.4, 15.5) | 30.3 (28.1, 32.4) | 28.8 (24.2, 33.3) | 5.7 (3.0, 8.3) | 21.9 (15.2, 28.5) | 22.0 (11.9, 32.0) |
| Age at first cannabis usec | ||||||
| < 16 years | 43.4 (41.7, 45.1) | 46.1 (44.1, 48.0) | 42.6 (37.4, 47.9) | 34.0 (29.0, 39.0) | 45.8 (39.6, 52.0) | 34.9 (23.9, 45.9) |
| ≥ 16 years | 56.6 (54.9, 58.3) | 53.9 (52.0, 55.9) | 57.4 (52.1, 62.6) | 66.0 (61.0, 71.0) | 54.2 (47.9, 60.4) | 65.1 (54.1, 76.1) |
| Cannabis use frequencyc (past 30 days) | ||||||
| < 20 days | 55.3 (53.8, 56.8) | 54.6 (52.2, 56.9) | 42.6 (37.4, 47.9) | 70.5 (65.0, 76.0) | 54.6 (52.2, 56.9) | 34.9 (23.9, 45.9) |
| 20 or more days | 44.7 (43.2, 46.2) | 45.4 (43.1, 47.8) | 57.4 (52.1, 62.6) | 29.5 (24.0, 35.0) | 45.4 (43.1, 47.8) | 65.1 (54.1, 76.1) |
| Any past year cannabis use recommended by a healthcare professional?c | ||||||
| All | 5.0 (4.4, 5.6) | 9.9 (8.8, 11.1) | 12.9 (10.0, 15.8) | 8.3 (5.3, 11.3) | 23.4 (17.8, 28.9) | 20.1 (11.5, 28.8) |
| Some, but not all | 5.6 (4.2, 6.2) | 6.3 (5.2, 7.5) | 5.6 (3.2, 8.0) | 5.9 (3.0, 8.8) | 9.1 (4.3, 13.9) | 7.0 (1.1, 12.9) |
| None | 89.8 (88.6, 91.0) | 83.7 (82.4, 85.1) | 81.5 (77.6, 85.4) | 85.8 (81.9, 89.6) | 67.6 (60.1, 75.1) | 72.9 (63.0, 82.7) |
| Past year cannabis dependence | 16.7 (15.3, 18.2) | 7.5 (6.4, 8.5) | 3.3 (1.6, 4.9) | 9.9 (6.7, 13.1) | 8.9 (4.4, 13.3) | 0.2 (0.1, 0.5) |
| Self-reported overall health | ||||||
| Good to excellent | 90.6 (89.6, 91.6) | 85.8 (84.4, 87.1) | 76.4 (71.7, 81.0) | 92.0 (88.9, 95.1) | 79.6 (73.5, 85.7) | 71.3 (59.4, 83.3) |
| Fair/poor | 9.4 (8.4, 10.4) | 14.2 (12.9, 15.6) | 23.6 (18.9, 28.3) | 8.0 (4.9, 11.1) | 20.4 (14.3, 26.5) | 28.7 (16.7, 40.6) |
| Past year any mental illness | 36.7 (34.9, 38.5) | 36.7 (34.7, 38.7) | 28.4 (24.8, 32.1) | 29.1 (25.2, 32.9) | 33.3 (27.6, 39.0) | 23.6 (11.8, 35.4) |
aThe National Survey on Drug Use and Health (NSDUH) survey instrument uses the term “marijuana or hashish.” bOther substances included any past 30-day use of the following: any alcohol, tobacco (cigarettes, cigars, pipes, smokeless tobacco); illicit drugs (cocaine, crack, heroin, hallucinogens, LSD, PCP, ecstasy, ketamine, DMT/AMT/Foxy, Salvia, inhalants, methamphetamine); and pain medications, tranquilizers, stimulants, or sedatives (when use was not directed by a doctor). cMissing < 1% of data