Table 1.
Demographic Characteristics of Control, Cocaine Dependent and the Group of Separate Control Subjects
| Characteristic | Control (n=24) | Cocaine Dependent (n=27) | Separate Control (n=29) | F-stats | p-value | |||
|---|---|---|---|---|---|---|---|---|
| Mean/n | SD/% | Mean/n | SD/% | Mean/n | SD/% | |||
| Age, mean (SD) (years) | 39.76 | 7.09 | 39.73 | 6.14 | 41.1 | 10.6 | 0.40a | 0.67 |
|
| ||||||||
| Education, mean (SD) (years) | ||||||||
| Subject | 15.16 | 1.62 | 13.41 | 1.93 | 12.07 | 2.17 | 16.98a | <0.001 |
| Primary caregiver | 13.44 | 4.26 | 12.08 | 4.06 | 13.10 | 4.49 | 0.71a | 0.50 |
|
| ||||||||
| Female, No (%) | 5 | 18.52 | 5 | 20.83 | 11 | 37.93 | 3.17b | 0.21 |
|
| ||||||||
| Cocaine use, mean (SD) | ||||||||
| Days used in 30 days | -- | -- | 3.2 | 1.63 | -- | -- | -- | -- |
| Average number of days since last use | 1.6 | 0.82 | ||||||
| Years used in lifetime | -- | -- | 14.6 | 6.83 | -- | -- | -- | -- |
| Age of onset of cocaine use | -- | -- | 25.56 | 6.21 | -- | -- | -- | -- |
a
Values obtained by F-test.
b
Values obtained by χ2 test.