Table 3. Group Means (SD) for Alcohol, Cannabis, Amphetamine, and Cocaine use; and Length of Hair Tested for Amphetamines, Cocaine, and Methamphetamines use‡.
| Ex-ecstasy users (EEs) | Polydrug controls (PCs) | Drug-naive controls (DCs) | |
|---|---|---|---|
| Alcohol | |||
| Units per week* | 19.35 (16.11) | 23.03 (17.32) | 6.84 (5.01) |
| Days since last use | 16.57 (47.25) | 4.29 (3.63) | 64.17 (209.71) |
| Cannabis | |||
| Weeks since last use | 82.95 (129.98) | 45.87 (62.26) | |
| Years of regular use | 8.58 (5.76) | 7.15 (3.27) | |
| Amount used per month (oz) | 1.09 (1.37) | 1.58 (1.65) | |
| Lifetime amount (oz) | 143.36 (314.32) | 100.83 (95.78) | |
| Amphetamine | |||
| Weeks since last use | 379.97 (312.59) | 362.63 (457.92) | |
| Years of regular use | 4.17 (2.99) | 4.67 (5.20) | |
| Dose per session (g) | 0.83 (0.26) | 1.06 (0.58) | |
| Lifetime amount (g) | 42.65 (82.41) | 346.73 (550.54) | |
| Cocaine | |||
| Weeks since last use | 53.03 (120.75) | 70.52 (103.68) | |
| Years of regular use | 3.39 (1.80) | 5.22 (4.02) | |
| Dose per session (g) | 1.09 (1.04) | 1.12 (0.88) | |
| Lifetime amount (g) | 399.26 (645.50) | 199.40 (330.89) | |
| Length of hair tested for amphetamines, cocaine, and methamphetamines use (cm)‡ | 3.00 (1.17) | 2.83 (0.39) | 2.88 (0.74) |
Significant comparison: *PC>DC (p=0.02, corrected).
‡Excludes 1 EE and 2 PCs who tested positive for cocaine.