Characteristics of included participants from the National Health and Nutrition Examination Survey, 2005–2018
| Represented no of adults in the USA | Cannabis use in past 30 days? | P value | |
| No (n=18,597) | Yes (n=3132) | ||
| 125,275,280 | 21,142,592 | ||
| Age in years, n (%) | |||
| 20–29 | 4375 (23.1) | 1311 (41.2) | <0.001 |
| 30–39 | 4675 (23.9) | 784 (23.2) | |
| 40–49 | 4848 (26.5) | 579 (19.1) | |
| 50–59 | 4699 (26.5) | 458 (16.5) | |
| Sex, n (%) | |||
| Female | 9962 (52.2) | 1194 (37.9) | <0.001 |
| Male | 8635 (47.8) | 1938 (62.1) | |
| Ethnicity, n (%) | |||
| Hispanic | 5320 (16.7) | 498 (11.5) | <0.001 |
| White | 7251 (64.5) | 1407 (65.5) | |
| Black | 3731 (10.9) | 953 (16.9) | |
| Other | 2295 (8.0) | 274 (6.1) | |
| Education beyond high school, n (%) | 10 788 (65.0) | 1590 (55.4) | <0.001 |
| Hours worked per week, n (%) | |||
| ≤20 | 1113 (6.1) | 244 (7.3) | <0.001 |
| 21–40 | 6899 (36.7) | 1115 (37.2) | |
| 41–80 | 5030 (31.6) | 642 (24.9) | |
| >80 | 100 (0.5) | 19 (0.7) | |
| Missing data | 5455 (25.1) | 1112 (29.8) | |
| Hypertension, n (%) | 4363 (22.9) | 669 (20.3) | <0.01 |
| Diabetes, n (%) | 1385 (6.1) | 130 (3.4) | <0.001 |
| Coronary artery disease, n (%) | 206 (1.0) | 27 (1.1) | 0.76 |
| BMI in kg/m², n (%) | |||
| <25 | 5287 (29.5) | 1251 (40.6) | <0.001 |
| 25–30 | 5921 (32.1) | 921 (30.1) | |
| ≥30 | 7389 (38.4) | 960 (29.3) | |
| Smoker, n (%) | 3615 (18.6) | 1668 (50.2) | <0.001 |
| Heavy alcohol use, n (%) | 3271 (17.3) | 1165 (38.3) | <0.001 |
| Missing data | 5280 (23.7) | 261 (8.1) | |
| Prescription drug use, n (%) | |||
| Opioids | 814 (4.6) | 200 (5.8) | <0.001 |
| Benzodiazepines | 395 (2.5) | 98 (3.6) | <0.001 |
| Z drugs | 208 (1.5) | 40 (1.5) | 0.98 |
| Barbiturates | 63 (0.3) | 9 (0.3) | 0.44 |
| Other sedatives | 552 (3.0) | 114 (3.0) | 0.90 |
| Stimulants | 164 (1.2) | 51 (2.4) | <0.001 |
| Survey year, n (%) | |||
| 2005–2006 | 2508 (14.3) | 325 (12.0) | <0.001 |
| 2007–2008 | 2747 (14.3) | 394 (11.4) | |
| 2009–2010 | 2961 (14.0) | 466 (12.4) | |
| 2011–2012 | 2570 (14.1) | 422 (13.1) | |
| 2013–2014 | 2835 (14.8) | 492 (14.4) | |
| 2015–2016 | 2637 (14.1) | 477 (16.8) | |
| 2017–2018 | 2339 (14.3) | 556 (19.8) | |
All proportions displayed are weighted to represent the non-institutionalized population in the continental USA. Survey weights are adjusted by the number of years of data included in analysis.
P values reflect χ2-analysis used to test significance between groups for categorical variables.
BMI, body mass index.;