Table 2.
Demographic information for participants who chose alcohol or amphetamine (Choosers) and participants who chose placebo (Non-choosers) during the choice session of the alcohol and amphetamine studies. “Binges” correspond to 5 or more drinks on a single occasion for men, 4 for women.
| Alcohol | Amphetamine | |||
|---|---|---|---|---|
| Choosers | Non-choosers | Choosers | Non-choosers | |
| Sex (M,F) | (31, 24) | (19, 21) | (47, 34) | (13, 18) |
| Age | 24.27 (2.6) | 24.03 (2.8) | 24.92 (2.9) | 25.29 (3.0) |
| BMI | 23.30 (2.3) | 23.33 (2.3) | 23.12(1.9) | 22.22(1.9) |
| Education years | 15.42(1.6) | 15.55(1.4) | 15.23(1.5) | 15.75(1.4) |
| Current Drug Use | ||||
| Alcohol (days last month) | 16.13(5.1) | 14.50 (5.4) | 10.15(6.6) | 8.81 (5.8) |
| Alcohol (binges last month) | 4.18(3.2) | 4.95 (2.7) | 1.85 (2.8) | 1.65 (2.6) |
| Alcohol (drinks per occasion) | 3.54(1.6) | 3.68(1.6) | 2.95(1.87) | 2.48(1.0) |
| Alcohol (total drinks last 28 days) | 51.51 (19.3) | 49.78 (20.3) | 27.93 (24.2) | 24.77 (22.3) |
| Tobacco (% used in last month) | 27% | 30% | 36% | 29% |
| Cannabis (% used in last month) | 69% | 63% | 46% | 39% |
| Lifetime Drug Use | ||||
| Opiate (% reported use) | 16% | 20% | 31% | 26% |
| Stimulant(% reported use) | 44% | 55% | 20% | 16% |
| Personality (MPQ) | ||||
| Positive Emotionality | 52.61 (9.8) | 53.79 (8.6) | 55.28 (9.5) | 55.26 (9.2) |
| Negative Emotionality | 45.47 (9.0) | 43.38 (8.8) | 42.59 (9.4) | 44.06 (9.3) |
| Constraint | 41.51 (8.7) | 39.69 (7.1) | 41.37 (8.2) | 42.71 (8.0) |