TABLE 1.
Demographic Characteristics of Control and Cocaine Abuser Groups
| Characteristic | Control Group (n = 13) | Cocaine Group (n = 13) | ||||
|---|---|---|---|---|---|---|
| Mean | SD | Range | Mean | SD | Range | |
| Age (years) | 30.0 | 6.3 | 22–42 | 36.1* | 4.8 | 28–43 |
| Education (years) | 13.2 | 2.9 | 8–19 | 13.1 | 2.7 | 12–18 |
| Mother's education (years) | 12.8 | 2.6 | 9–17 | 12.0 | 3.1 | 8–20 |
| Shipley IQ | 98.1 | 10.3 | 83–118 | 95.8 | 11.9 | 77–113 |
| Hollingshead socioeconomic status | 4.3 | 1.2 | 4.2 | 0.8 | ||
| N | % | N | % | |||
| Sex | ||||||
| Male | 10 | 77 | 10 | 77 | ||
| Female | 3 | 33 | 3 | 33 | ||
| Race | ||||||
| African American | 6 | 9 | ||||
| Caucasian | 6 | 3 | ||||
| Hispanic | 1 | 1 | ||||
| Cigarette smokers | 7 | 11 | ||||
| Cocaine use | ||||||
| Route of administration: smoke | 0 | 13 | 100 | |||
| Mean | SD | Range | Mean | SD | Range | |
| Days/week | 0 | 5.2 | 1.7 | 3–7 | ||
| Grams/week | 0 | 3.2 | 2.7 | 0.9–10.5 | ||
| Longest use/years | 0 | 7.3 | 2–15 | |||
| Alcohol use (drinks/week) | 0.7 | 1.7 | 0–6 | 3.2 | 3.7 | 0–10 |
p<0.05.
SD = standard deviation