(a) Results of likelihood Chi square test for motivational and addiction associated determinants of premature treatment drop-out.
| Characteristics | Total | Treatment completed | Dropped out of treatment | p |
|---|---|---|---|---|
| N = 832 | N = 525 | N = 307 | ||
| Motivation∗∗ | ||||
| Partner/family | 166 (20.0%) | 119 (71.7%) | 47 (28.3%) | 0.0093 |
| Health | 231 (27.8%) | 164 (71.0%) | 67 (29.0%) | 0.0031 |
| Job/residence | 148 (17.8%) | 104 (70.3%) | 44 (29.7%) | 0.0435 |
| Prison (therapy instead of penalty) | 15 (1.8%) | 5 (33.3%) | 10 (66.7%) | 0.0184 |
| Abstinence | 164 (19.7%) | 100 (61.0%) | 64 (39.0%) | 0.5302 |
| Emergency | 69 (8.0%) | 35 (50.7%) | 34 (49.3%) | 0.0285 |
| Other | 221 (26.6%) | 134 (60.6%) | 87 (39.4%) | 0.3766 |
| Motivation not specified | 41 (4.9%) | 21 (51.2%) | 20 (48.8%) | 0.1115 |
| Number of previous detoxification treatments | 0.0002 | |||
| None | 295 (35.5%) | 209 (70.9%) | 86 (29.1%) | |
| 1-2 detoxification treatments | 269 (32.3%) | 173 (64.3%) | 96 (35.7%) | |
| 3–10 detoxification treatments | 210 (25.2%) | 110 (52.4%) | 100 (47.6%) | |
| 11–20 detoxification treatments | 39 (4.7%) | 25 (64.1%) | 14 (35.9%) | |
| More than 20 detoxification treatments | 19 (2.3%) | 8 (42.1%) | 11 (57.9%) | |
| Duration of substance dependency (years) | 15.2 | 15.6 | 14.4 | 0.1139 |
| Longest period of abstinence (months) | 12.7 | 15 | 8.8 | 0.0874 |
| Number of previous drop-outs | 0.0001 | |||
| None | 639 (76.8%) | 457 (71.5%) | 182 (28.5%) | |
| 1-2 drop-outs | 149 (17.9%) | 54 (36.2%) | 95 (63.8%) | |
| 3 or more drop-outs | 44 (5.3%) | 14 (31.8%) | 30 (68.2%) |
∗∗Multiple selections were allowed.