Table 3.
Multivariable logistic regression assessing correlates of past 30-day cannabisa-only use (vs. cannabis and other substance useb), National Survey on Drug Use and Health, 2017–2018
|
N = 11,842 Adjusted odds ratio (95% CI) |
p-value | |
|---|---|---|
| Sex | ||
| Male | Reference | 0.35 |
| Female | 1.1 (0.9, 1.4) | |
| Age | ||
| 18–25 years | 1.4 (1.1, 2.0) | < .001 |
| 26–49 years | 2.1 (1.5, 2.9) | |
| > = 50 years | Reference | |
| Race | ||
| Non-Hispanic (NH) White | Reference | 0.30 |
| NH Black | 0.8 (0.6, 1.0) | |
| NH other | 0.9 (0.7, 1.3) | |
| Hispanic | 0.8 (0.6, 1.1) | |
| Education | ||
| < high school | Reference | < .01 |
| High school graduate | 1.0 (0.6, 1.5) | |
| Some college/associate degree | 1.1 (0.7, 1.7) | |
| College graduate | 1.8 (1.1, 2.8) | |
| Age at first cannabis usec | ||
| < 16 years | 1.4 (1.1, 1.6) | < .001 |
| ≥ 16 years | Reference | |
| Cannabis use frequencyc (past 30 days) | ||
| 20 days | Reference | < .01 |
| 20 or more days | 1.3 (1.1, 1.5) | |
| Any past year cannabis use recommended by a healthcare professional?c | ||
| All | Reference | < .0001 |
| Some, but not all | 1.4 (0.9, 2.2) | |
| None | 2.3 (1.8, 2.9) | |
| Past year cannabis dependence | ||
| Yes | 1.3 (0.9, 1.9) | 0.12 |
| No | Reference | |
| Self-reported overall health | ||
| Good to excellent | Reference | 0.48 |
| Fair/poor | 0.9 (0.6, 1.2) | |
| Past year any mental illness | ||
| Any | 1.2 (0.9, 1.5) | 0.18 |
| None | Reference | |
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