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Sample characteristics
| Total sample (n = 302) | |
|---|---|
| Sex (%) | |
| Male | 73% |
| Female | 27% |
| Race/ethnicity (%) | |
| White | 66% |
| African American | 5% |
| Hispanic | 23% |
| Other | 6% |
| Age at enrollment (M ± SD) | 37 ± 9.8 |
| Education level—years completed (M ± SD) | 13.1 ± 2.8 |
| Usually employed full time in past 3 years (%) | 56% |
| Primary substance (%) | |
| Methamphetamine | 56% |
| Cocaine | 30% |
| Both | 14% |
