Table 1. Lifetime and past 90-day rates at enrollment, and cumulative rates over the study interval of non-medical use of benzodiazepines, muscle relaxants, and prescription stimulants, and opioid analgesic misuse (N=296).
| Lifetime rate N (%) | Past 90-day rate N (%) | Cumulative rate d N (%) | |
|---|---|---|---|
| Non-medical use of benzodiazepines a | 85 (28.7) | 26 (8.8) | 75 (25.3) |
| Non-medical use of muscle relaxants b | 44 (14.9) | 10 (3.4) | 34 (11.5) |
| Non-medical use of prescription stimulants c | 28 (9.5) | 5 (1.7) | 18 (6.1) |
| Opioid analgesic misuse e | 160 (54.4) | 72 (24.3) | 158 (53.4) |
a
Non-medical use of benzodiazepines including lorazepam, alprazolam, or diazepam
b
Non-medical use of muscle relaxants including cyclobenzaprine, carisoprodol, or baclofen
c
Non-medical use of prescription stimulants including dextroamphetamine or methylphenidate
d
Cumulative rate over 2 year study interval
e
Defined as any behavior that increases risk for overdose or legal consequences or behaviors for which more than 50% of the participants reported that the motivation for opioid analgesic misuse was to get high