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Marijuana use characteristics by group.
| MJ-related variables | Mean (SD) | 2-Tailed t-test p values | |
|---|---|---|---|
| MJBP (n = 12) | MJ (n = 20) | MJBP vs. MJ | |
| Age of MJ onset | 16.67 (2.61) | 15.95 (1.61) | NS |
| Urinary THC/creatinine level (ng/mL) | 397.20 (526.30) | 347.87 (357.27) | NS |
| Smokes per week | 13.69 (14.20) | 14.14 (7.12) | NS |
| Grams per week | 4.58 (3.25) | 6.53 (5.66) | NS |
| Duration of MJ use (years) | 7.58 (2.64) | 4.85 (3.13) | 0.02 |
Note: THC, tetrahydrocannabinol.
