Table 1.
Demographics of control subjects and ecstasy users
| Controls (n = 50) | Ecstasy users (n = 49) | P | |
|---|---|---|---|
| Age | 26.0 ± 0.9 | 25.9 ± 0.8 | 0.90 |
| Gender | 25 male; 25 female | 28 male; 21 female | (χ2) 0.51 |
| 0.48 | |||
| Body mass index | 24.7 ± 0.4 | 23.4 ± 0.5 | 0.04 |
| Handedness | 5 left handed | 4 left handed | (χ2) 0.10 |
| 43 right handed | 43 right handed | 0.75 | |
| 2 not recorded | 2 not recorded | ||
| Education (years) | 16.0 ± 0.3 (n = 49) | 14.6 ± 0.4 (n = 47) | 0.002 |
| % College/university educated (1 year | 96.0% | 79.6% | (χ2) 6.23 |
| or more) | 0.01 | ||
| Premorbid IQa | 111.6 ± 0.9 (n = 48) | 107.4 ± 0.9 (n = 45) | 0.002 |
| Employment status (%) | |||
| student | 27 (54) | 9 (18) | (χ2) 15.37 |
| employed | 21 (42) | 31 (63) | 0.0005 |
| unemployed | 2 (4) | 9 (18) | |
| Current cigarette smokers | 5 | 30 | (χ2) 28.4 |
| <0.0001 | |||
| Alcohol use | 1.4 ± 0.3 drinks per week | 3.1 ± 0.4 drinks per week | 0.001 |
| Current Cannabis use (≥1×/month) | 1 | 25 | (χ2) 30.7 |
| <0.0001 | |||
| SERT promoter gene polymorphism | |||
| LALA | 7 | 13 | |
| LALG | 4 | 5 | |
| LGLG | 4 | 0 | |
| LAS | 18 | 16 | |
| LGS | 5 | 5 | |
| SS | 12 | 9 | |
| Hormonal contraception in females | 10 | 8 | (χ2) 0.0174 |
| 0.895 | |||
| Race | 12 Asian, 7 Black or African American, 27 White, 3 Mixed, 1 unknown/adopted | 14 Asian, 3 Black or African American, 28 White, 4 Mixed | (χ2) 1.8 0.6 |
Data are mean ± SEM. SERT polymorphism type (see ‘Materials and methods’ and ‘Results’ for details).
a Intelligence Quotient (IQ) as per results on the National Adult Reading Test.