(b) Results of logistic regression analysis with motivational and treatment history variables as determinants.
| Characteristic | OR | 95% CI | Wald Chi2 | p |
|---|---|---|---|---|
| Motivation | ||||
| Partner/family (no versus yes) | 1.41 | 0.90–2.20 | 2.20 | 0.1376 |
| Health (no versus yes) | 1.42 | 0.91–2.24 | 2.43 | 0.1191 |
| Job/residence (no versus yes) | 1.45 | 0.90–2.32 | 2.35 | 0.1255 |
| Prison (therapy instead of penalty) | 0.42 | 0.13–1.42 | 1.95 | 0.1628 |
| Abstinence (no versus yes) | 0.97 | 0.59–1.58 | 0.02 | 0.8964 |
| Emergency (no versus yes) | 0.81 | 0.42–1.58 | 0.38 | 0.5389 |
| Other (no versus yes) | 0.95 | 0.60–1.52 | 0.04 | 0.8352 |
| Not specified (no versus yes) | 0.89 | 0.39–2.00 | 0.08 | 0.7724 |
| Number of previous detoxification treatments | ||||
| None | 1.00 | |||
| 1-2 detoxification treatments | 1.15 | 0.77–1.71 | 3.39 | 0.0654 |
| 3–10 detoxification treatments | 1.08 | 0.65–1.81 | 2.77 | 0.0959 |
| 11–20 detoxification treatments | 0.36 | 0.14–0.93 | 5.12 | 0.0237 |
| More than 20 detoxification treatments | 0.59 | 0.16–2.20 | 0.29 | 0.5926 |
| Duration of substance dependency (years) | 0.97 | 0.96–0.99 | 7.05 | 0.0079 |
| Longest period of abstinence (months) | 0.99 | 0.99–1.00 | 3.65 | 0.0560 |
| Number of previous drop-outs | ||||
| None | 1.00 | |||
| 1-2 drop-outs | 4.67 | 2.93–7.45 | 1.64 | 0.2001 |
| 3 or more drop-outs | 10.45 | 3.97–27.56 | 11.14 | 0.0008 |