Table 2.
Past-year drunkenness | Past-year marijuana use | Past-year illicit drug use other than marijuana | Past-year nonmedical use of other prescription medications | |||||
---|---|---|---|---|---|---|---|---|
| ||||||||
Diversion Source | % | Adjusted OR (95% CI) | % | Adjusted OR (95% CI) | % | Adjusted OR (95% CI) | % | Adjusted OR (95% CI) |
| ||||||||
Previous prescription only | 68.1 | -- | 7.7 | -- | 10.7 | -- | 23.8 | -- |
Previous prescription + other sources | 92.1 | 4.9 (1.6–15.0)** | 35.8 | 6.1 (1.8–20.7)** | 44.1 | 6.1 (2.1–18.0)*** | 75.1 | 10.5 (4.2–26.6)*** |
Other sources | 88.8 | 3.2 (1.4–7.1)** | 33.5 | 5.6 (1.8–17.4)** | 52.4 | 8.3 (3.0–22.6)*** | 66.6 | 6.4 (2.9–14.0)*** |
Non-user | 40.3 | 0.3 (0.1–0.6)*** | 4.0 | 0.4 (0.1–1.3) | 3.9 | 0.3 (0.1–0.8)* | 4.4 | 0.1 (<0.1–0.3)*** |
Chi-square (DF), p-value | 237.8 (3), p < 0.001 | 423.2 (3), p < 0.001 | 855.7 (3), p < 0.001 | 1280.4 (3), p < 0.001 |
--The reference group is “Previous prescription only.”
Sample sizes for the regression models ranged from 7,857 (Past-year Drunkenness) to 8,442 (Past-year Marijuana Use) due to missing data.
Multivariate logistic regression adjusting for sex, cohort year, and school geographical region.
p < 0.05,
p < 0.01,
p < 0.001 based on logistic regression results.
Any past-year illicit drug use other than marijuana included LSD, psychedelics other than LSD, heroin, crack, and cocaine.
Any past-year nonmedical use of other prescription medications included stimulants, tranquilizers and sedatives.
Source: 2007–2010 MTF; weighted estimates with average design effect correction of 2.0 applied to chi-square statistics.