Drug screened | Males N = 468 F (%) | Females N = 282 F (%) | Total % | P value |
THC | 30 (6.4) | 0 | 3.9 | <0.0001* |
Tramadol | 16 (3.4) | 1 (0.35) | 1.9 | 0.02 |
BZDs | 4 (0.85) | 1 (0.35) | 0.67 | 0.62 |
Opium | 4 (0.85) | 0 | 0.47 | 0.18 |
Barbiturates | 4 (0.85) | 0 | 0.47 | 0.18 |
Amphetamine | 0 | 0 | 0 | 0 |
Cocaine | 0 | 0 | 0 | 0 |
All drugs | 54 (11.5) | 2 (0.71) | 7.41 | <0.0001* |