TABLE 1.
Sociodemographic Characteristics of 528 Psychoactive-Substance-Using Individuals at the Time of Intake for Treatment (TRS) or Nontreatment (NTS) Research Protocols
| TRS (N = 295) | NTS (N = 233) | |
|---|---|---|
| Malesa | 224 (76%) | 228 (97.8%) |
| Females | 71 (24%) | 5 (2.2%) |
| Age | ||
| Mean ± SD | 31.68 ± 5.4 | 31.8 ± 5.6 |
| Median | 31 | 30 |
| Range | 21–7 | 19–52 |
| Years of education | ||
| Mean ± SD | 11.90 ± 2.1 | 11.7 ± 1.6 |
| Median | 12 | 11 |
| Range | 7–18 | 7–19 |
| Ethnicitya | ||
| African-American | 128 (43.1%) | 135 (57.9%) |
| White | 166 (56.2%) | 91 (39.1%) |
| Hispanic | 1 (0.3%) | 2 (.9%) |
| Native American | 3 (1.3%) | |
| Not classified | 2 (.9%) | |
| Drug of Choicea | ||
| Heroin | 160 (54.6%) | 62 (26.6%) |
| Cocaine | 135 (45.4%) | 68 (29.2%) |
| Marijuana | 0 | 53 (22.7%) |
| Other | 0 | 25 (10.7%) |
| Unknown | 0 | 12 (5.1%) |
| Multiple | 0 | 13 (5.7%) |
a
There were significant (p < .001) differences between TRS and NTS groups.