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Concomitant substances and comparison of reported vs. UDS results
| Drug | Reported use (N = 184) | UDS positive (N = 153) | ||
|---|---|---|---|---|
| Number | Percentage | Number | Percentage | |
| PCP | 169 | 91.8 | 151 | 98.7 |
| Alcohol | 37 | 20.1 | Not done | – |
| Amphetamine | 2 | 1.1 | 1 | 0.7 |
| Barbiturates | 0 | 0 | 2 | 1.3 |
| Benzodiazepine | 13 | 7.1 | 39 | 25.5 |
| Cocaine | 10 | 5.4 | 14 | 9.1 |
| Heroin | 2 | 1.1 | 0 | 0 |
| Marijuana | 47 | 25.5 | 63 | 41.2 |
| Opiates | 2 | 1.1 | 19 | 12.4 |
