|  | Participants |
---|---|---|
 |  | N = 505 |
Age | (years, mean ± SD) | 40.7 ± 9.4 |
Age at first heroin use | (years, mean ± SD) | 27.4 ± 7.5 |
Education | (years, mean ± SD) | 9.18 ± 2.22 |
Average methadone dose at interview | (mg, mean ± SD) | 48.0 ± 32.8 |
Duration from intake to interview | (days, mean ± SD) | 184 ± 149 |
Gender | Male | 440 (87%) |
 | Female | 65 (13%) |
Employed | No | 181 (36%) |
 | Yes | 324 (64%) |
HCV | Negative | 79 (16%) |
 | Positive | 426 (84%) |
HIV | Negative | 439(87%) |
 | Positive | 66 (13%) |
Urine test at interview | Negative | 307 (61%) |
 | Positive | 198 (39%) |