Table 2.
Opioid use disorder characteristics of the sample (n = 263).
| % or Mean (SD) | |
|---|---|
| Before OST Initiation | |
| Stages of OUD (age, y) | |
| First experimentation | 20.4 (5.1) |
| Onset of dependence | 22.9 (5.7) |
| First attempt to stop | 26.0 (6.0) |
| Opioid mainly used | |
| Heroin | 90% |
| Codeine | 4% |
| Buprenorphine | 3% |
| Morphine | 2% |
| Varying | 1% |
| Main route of administration | |
| Nasal | 60% |
| Intravenous | 23% |
| Inhaled | 11% |
| Oral | 4% |
| Varying | 1% |
| OUD negative consequences | |
| Financial | 71% |
| Socioaffective | 70% |
| Psychiatric | 69% |
| Professional | 55% |
| Judicial | 48% |
| Somatic | 33% |
| Type of first attempt to stop | |
| OST initiation | 57% |
| Withdrawal | 42% |
| Since OST Initiation | |
| Current OST | |
| Methadone | 68% |
| Buprenorphine | 32% |
| OST initiation with daily supervised dosing | 80% |
| Current daily dose (mg/day) | |
| Methadone | 57.4 (32.7) |
| Buprenorphine | 7.4 (5.5) |
| Maximal daily dose (mg/day) | |
| Methadone | 84.6 (36.3) |
| Buprenorphine | 11.0 (5.7) |
| OST length (mo) | 51.0 (4.3) |
| Poor compliance | 7% |
| Presence of opioid withdrawal symptoms | 17% |
| Current opioid abstinence (excluding OST) | 75% |
OST, opioid substitution therapy; OUD, opioid use disorder.