TABLE 2.
Demographic Characteristics by Type of Marijuana Use Among US High School Students: National YRBS, 2015.
| Nonuse (n = 9049) | Ever Used Marijuana Only (n = 4585) | Ever Used Synthetic Cannabinoid (n = 1554) | P (χ2 test) | |
|---|---|---|---|---|
| Total | 61.1 (57.8–64.2) | 29.5 (26.6–32.6) | 9.4 (8.1–11.0) | |
| Sex | ||||
| Male | 50.0 (45.6–54.4) | 50.8 (47.9–53.6) | 57.8 (54.8–60.7) | <.01 |
| Female | 50.0 (45.6–54.4) | 49.2 (46.4–52.1) | 42.2 (39.3–45.2) | |
| Race/ethnicity | ||||
| Non-Hispanic white | 58.1 (52.0–64.0) | 48.8 (43.0–54.6) | 52.4 (45.7–58.9) | <.0001 |
| Non-Hispanic black | 11.6 (9.8–13.7) | 17.0 (14.1–20.4) | 11.4 (8.5–15.1) | |
| Hispanic | 19.7 (15.5–24.7) | 25.8 (20.8–31.6) | 28.4 (23.0–34.6) | |
| Grade | ||||
| 9th | 32.7 (30.1–35.4) | 17.5 (15.4–19.7) | 21.0 (17.9–24.4) | <.0001 |
| 10th | 27.0 (24.0–30.2) | 23.2 (21.3–25.2) | 24.8 (21.3–28.7) | |
| 11th | 21.3 (20.0–22.8) | 28.6 (26.4–30.9) | 26.3 (23.3–29.5) | |
| 12th | 18.9 (17.8–20.2) | 30.8 (28.6–33.0) | 27.9 (24.0–32.3) | |
| Geographic region | ||||
| Northeast | 18.4 (9.5–32.6) | 18.7 (9.8–33.0) | 17.0 (8.1–32.2) | .1232 |
| Midwest | 26.6 (15.7–41.3) | 16.9 (9.7–27.7) | 21.3 (11.6–35.7) | |
| South | 25.7 (16.0–38.6) | 27.8 (17.3–41.3) | 33.2 (20.7–48.7) | |
| West | 29.3 (19.4–41.7) | 36.6 (23.5–52.1) | 28.5 (18.4–41.4) | |
Data are presented as percentages (95% CIs).