Table 1. Demographic Characteristics of Participants.
| Number of participants | 11 (8 M; 3 F) |
| Race (Black/White) | 9/2 |
| Ethnicity (Hispanic/non-Hispanic) | 3/8 |
| Age (years) | 30±10 |
| Education (years) | 12.4±1.2 |
| Marijuana use (no of days/week) | 6.9±0.3 |
| Marijuana cigarettes/day | 8.3±3.1 |
| Age first marijuana use (years) | 16.1±4.1 |
| Cigarette smokers | 11 |
| Cigarettes/day | 5.7±5.5 |
| Alcohol drinkersa | 2 |
| Alcohol: drinks/week | 2.5±0.7 |
Note: Data are presented as means (±SD) or as frequency.
Participants used no drugs other than marijuana, alcohol, or tobacco.
a
Only included those reporting at least 1 drink per week.