Demographic and clinical characteristics of control and cocaine-dependent volunteers
Data are presented as means ± S.D. or n (%).
Characteristic | Control (n = 19) | Cocaine Dependent (n = 19) | Statistics |
|---|---|---|---|
| Demographics | |||
| Age (years) | 39.7 ± 10.0 | 43.2 ± 5.1 | t = 1.3, P = 0.19 |
| Ethnicity | |||
| White | 8 (42) | 2 (11) | P = 0.06a |
| Nonwhite | 11 (58) | 17 (89) | |
| Marital status | |||
| Married | 4 (21) | 1 (5) | P = 0.34a |
| Not married | 15 (79) | 18 (95) | |
| Education (years) | 15.2 ± 1.7 | 12.9 ± 1.8 | t = 4.1, P < 0.001 |
| Body mass index | 25.2 ± 3.9 | 25.6 ± 3.0 | t = 0.4, P = 0.7 |
| Substance consumption | |||
| Cocaine (last 3 months) | |||
| Days per month | 20.7 ± 6.8 | ||
| Use (g) per month | 122 ± 117 | ||
| Days since last use | 2.9 ± 3.4 | ||
| Alcohol consumption (last 3 months) | |||
| Days per month | 2.7 ± 6.8 | 13.1 ± 10.3 | t = 3.7, P = 0.001 |
| Drinks (1 ozb) per month | 4.2 ± 11.3 | 47.5 ± 57.1 | t = 3.2, P = 0.003 |
| Days since last usec | 48.8 ± 98.7 | 4.4 ± 8.4 | t = 1.6, P = 0.13 |
| Tobacco consumption (last 3 months) | |||
| Use (cigarettes) per day | 0.8 ± 2.8 | 8.0 ± 6.5 | t = 4.4, P < 0.001 |