Characteristic | Total sample N = 683 | Self-reported psychiatric comorbidity n = 162 (23.7%) | No self-reported psychiatric comorbidity n = 521 (76.3%) |
---|---|---|---|
Age (years); mean (SD) | 39.1 (11.4) | 37.8 (11.6) | 39.4 (11.3) |
Sex; n (%) | |||
 Males | 395 (57.8%) | 94 (58.0%) | 301 (57.8%) |
 Females | 288 (42.2%) | 68 (42.0%) | 220 (42.2%) |
Unemployment; n (%) | 450 (65.9%) | 108 (66.7%) | 342 (65.5%) |
Age at first opioid use (years); mean (SD) | 25.5 (8.8) | 25.2 (8.7) | 25.6 (8.8) |
Years in treatment; median (Q1, Q3) | 3 (1, 6) | 2 (1, 5) | 3 (1, 7) |
Methadone dose (mg/d); mean (SD) | 77.0 (46.5) | 71.8 (39.8) | 78.7 (48.3) |
Opioid abstinence at study entry; n (%) | 335 (49.1) | 71 (43.8) | 264 (50.7) |
Percentage (%) of opioid-positive drug screens at study entry if non-abstinent; median (Q1, Q3) | 25 (10, 58.2) | 29.6 (12, 64.3) | 23.5 (9.1, 55.6) |