Baseline characteristics of participants*
| Characteristic | Participant group; mean (and SD)† | |
|---|---|---|
| Naltrexone, n = 42 | Methadone, n = 38 | |
| Male, no. (and %) | 23 (55) | 21 (55) |
| Age, yr | 31.0 (6.6) | 31.0 (9.1) |
| In full-time employment, no. (and %) | 11 (26) | 10 (26) |
| No. of times a participant has started | ||
| Inpatient detoxification | 2.1 (3.0) | 0.9 (1.3) |
| Outpatient detoxification | 2.4 (3.6) | 2.7 (3.7) |
| Methadone maintenance | 2.7 (3.0) | 2.2 (1.4) |
| Current methadone dose, mg | 41.8 (23.2) | 49.3 (31.9) |
| Age of onset of | ||
| Heroin use, yr | 20.1 (4.5) | 20.6 (5.1) |
| Heroin dependence, yr | 22.0 (4.4) | 23.2 (6.3) |
| No. of days heroin was used in the previous 28 days | 6.2 (8.4) | 4.1 (7.2) |
| Cost of typical day’s use, A$ | 72.7 (77.6) | 49.2 (52.7) |
| BDI score | 12.1 (7.7) | 11.7 (10.2) |
| Participants who used antidepressants, no. (and %) | 4 (9.5) | 1 (2.6) |