Table 1.
Participant demographic and drug use variables (n=33)
| Magnitude Sample (n = 33) |
Duration Sample (n = 15) |
|
|---|---|---|
| Mean (SD) | Mean (SD) | |
| Age (yr) | 27.5 (4.7) | 27.9 (4.9) |
| Education (yr) | 12.7 (1.7) | 12.1 (0.7) |
| Age at first use of marijuana (yr) |
15 (2.9) | 13.3 (2.1) |
| No. blunts smoke per day |
4.7 (3.9) | 4.5 (2.1) |
| Duration of daily cannabis use (mo) |
97.2 (60) | 115.2 (55.9) |
| Estimated # lifetime episodes of MJ use |
11,847 (9867) | 13,391 (9782) |
| Regular tobacco use |
91% | 94% |
| Regular alcohol use |
18% | 24% |
| # times used MDMA |
0.3 (.7) | 0.4 (.9) |
| # times used cocaine |
1.6 (7.1) | 0 (0) |