Table 6 Change in primary outcomes for various periods of the study for participants who dropped out early (0 or 1 week) and for those who received full treatment (12 weeks).
From: Are alcoholism treatments effective? The Project MATCH data
| Total Improvement | ||||||||
|---|---|---|---|---|---|---|---|---|
| Percent days abstinent | ||||||||
| Group | Pretreatment | Follow-up | t= | df | p= | Effect | ||
| 0 | 33 | 72 | 1.95 | 85 | .000 | 1.498 | ||
| 1 | 29 | 64 | 9.30 | 105 | .000 | 1.320 | ||
| 12 | 30 | 86 | 31.74 | 354 | .000 | 2.042 | ||
| Drinks per drinking day | ||||||||
| 0 | 17.9 | 7.3 | 1.75 | 85 | .000 | 1.534 | ||
| 1 | 22.8 | 7.6 | 11.99 | 105 | .000 | 1.552 | ||
| 12 | 15.7 | 3.2 | 34.68 | 354 | .000 | 2.494 | ||
| Instantaneous Improvement (week 1) | ||||||||
| Percent days abstinent | ||||||||
| Group | Pretreatment | Week 1 | t= | df | p= | Effect | ||
| 0 | 32 | 81 | 9.17 | 56 | .000 | 1.981 | ||
| 1 | 30 | 69 | 8.43 | 87 | .000 | 1.447 | ||
| 12 | 30 | 92 | 35.30 | 339 | .000 | 2.317 | ||
| Drinks per drinking day | ||||||||
| 0 | 18.7 | 3.8 | 1.75 | 56 | .000 | 2.097 | ||
| 1 | 22.5 | 8.7 | 9.69 | 87 | .000 | 1.770 | ||
| 12 | 15.6 | 1.5 | 35.28 | 339 | .000 | 2.909 | ||
| Acute Treatment Phase (weeks 1 & 12) | ||||||||
| Percent days abstinent | ||||||||
| Group | Week 1 | Week 12 | t= | df | p= | Effect | ||
| 0 | 81 | 81 | .19 | 56 | .852 | -.025 | ||
| 1 | 69 | 63 | 1.69 | 87 | .098 | -.174 | ||
| 12 | 92 | 96 | 2.82 | 339 | .005 | .155 | ||
| Drinks per drinking day | ||||||||
| 0 | 3.8 | 5.0 | 1.08 | 56 | .283 | -.172 | ||
| 1 | 8.7 | 8.8 | .82 | 87 | .415 | -.090 | ||
| 12 | 1.5 | 1.1 | 2.05 | 339 | .041 | .126 | ||