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Urine screen test results
| Baseline | 6-month Follow-up | 12-month Follow- up |
|
|---|---|---|---|
| Number of available urine screen test results |
242 | 128 | 99 |
| Positive for: | n (%) | n (%) | n (%) |
| Amphetamines | 3 (1.2) | 3 (2.3) | 1 (1.0) |
| Bezoylecgonine | 7 (2.9) | 2 (1.6) | 5 (5.1) |
| Methamphetamines | 1 (0.4) | 1 (0.8) | 2 (2.0) |
| Morphine | 9 (3.7) | 3 (2.3) | 1 (1.0) |
| Phencyclidine | 0 | 1 (0.8) | 0 |
| Tetrahydrocannabinol | 203 (83.9) | 97 (75.2) | 76 (77.6) |
