TABLE 1.
Prevalence Estimates and PRs for NMUPD by Demographic Characteristics and Substance Use Among US High School Students, Youth Risk Behavior Surveillance System, 2011 to 2013
| Characteristic | Total Sample | Ever Took Prescription Drugs Without a Doctor’s Prescription | ||
|---|---|---|---|---|
| n (%)a | n (%)a | PR | 95% CI | |
| Total | 29 008 (100) | 5373 (19.3) | ||
| Sex | ||||
| Female | 14 329 (49.2) | 2382 (18.5) | Referent | |
| Male | 14 606 (50.8) | 2718 (20.0) | 1.08 | 1.00–1.17 |
| Race/ethnicity | ||||
| Whiteb | 11 620 (56.3) | 725 (20.9) | Referent | |
| Blackb | 5760 (14.2) | 2419 (14.1) | 0.67 | 0.59–0.77 |
| Hispanic | 8022 (20.5) | 1388 (19.3) | 0.92 | 0.82–1.03 |
| Grade | ||||
| 9 | 7362 (27.5) | 989 (14.5) | Referent | |
| 10 | 6845 (25.8) | 1154 (17.8) | 1.22 | 1.05–1.42 |
| 11 | 7317 (23.9) | 1400 (22.1) | 1.52 | 1.35–1.72 |
| 12 | 7256 (22.9) | 1522 (23.5) | 1.62 | 1.44–1.81 |
| Ever drank alcohol | ||||
| No | 8342 (31.4) | 276 (3.2) | Referent | |
| Yes | 18 930 (68.6) | 4636 (26.7) | 8.30 | 6.95–9.92 |
| Ever used marijuana | ||||
| No | 16 165 (59.7) | 888 (5.7) | Referent | |
| Yes | 12 004 (40.3) | 4065 (38.9) | 6.82 | 6.12–7.59 |
| Ever used inhalants | ||||
| No | 25 073 (89.8) | 3565 (15.0) | Referent | |
| Yes | 2852 (10.2) | 1481 (57.6) | 3.84 | 3.56–4.13 |
| Ever used ecstasy | ||||
| No | 25 457 (92.6) | 3481 (14.8) | Referent | |
| Yes | 2167 (7.4) | 1516 (75.4) | 5.08 | 4.72–5.47 |
| Ever used cocaine | ||||
| No | 26 763 (93.8) | 3789 (15.3) | Referent | |
| Yes | 1832 (6.2) | 1271 (77.8) | 5.08 | 4.65–5.54 |
| Ever used methamphetamines | ||||
| No | 27 307 (96.4) | 4299 (17.1) | Referent | |
| Yes | 983 (3.5) | 749 (82.1) | 4.80 | 4.43–5.19 |
| Ever used heroin | ||||
| No | 26 612 (97.4) | 4458 (17.8) | Referent | |
| Yes | 712 (2.6) | 535 (80.8) | 4.53 | 4.17–4.93 |
| Ever injected any illegal drug | ||||
| No | 26 831 (98.0) | 4519 (18.1) | Referent | |
| Yes | 588 (2.0) | 440 (80.9) | 4.48 | 4.16–4.82 |
a
Sample n is unweighted; percentage is weighted.
b
Non-Hispanic.