Table 2.
Treatment engagement and re-engagement variables across study conditions
| Characteristic | Overall (n=113) | MRC1 (n=31) | MRC+I1 (n=49) | SRC1 (n=33) | χ2 or F-test2 | p-value | Unadjusted Odds/Hazard Ratios (95% Confidence Intervals) | ||
|---|---|---|---|---|---|---|---|---|---|
| M (SE) | M (SE) | M (SE) | M (SE) | MRC+I vs. MRC | MRC+I vs. SRC | MRC vs. SRC | |||
| Modality first treatment | |||||||||
| Methadone | 59.3% | 64.5% | 65.3% | 45.5% | χ2 = 3.70 | 0.157 | -- | -- | -- |
| Other3 | 40.7% | 35.5% | 34.7% | 54.5% | |||||
| Days in treatment – first episode | 99.19 (10.39) | 124.55 (22.55) | 86.14 (14.14) | 94.76 (19.30) | F = 1.19 | 0.308 | -- | -- | -- |
| Left Treatment (%) | |||||||||
| No | 14.2% | 19.4% | 8.2% | 18.2% | χ2 = 2.58 | 0.278 | -- | -- | -- |
| Yes | 85.8% | 80.6% | 91.8% | 81.8% | |||||
| Re-enrolled in any treatment (%)4 | |||||||||
| No | 52.6% | 72.0% | 35.6% | 63.0% | χ2 = 10.18 | 0.006 | 4.66 (1.61-13.52) | 3.08 (1.14-8.30) | 0.66 (0.21-2.13) |
| Yes | 47.4% | 28.0% | 64.4% | 37.0% | |||||
| Re-enrolled in methadone treatment (%)4 | |||||||||
| No | 75.3% | 88.0% | 55.6% | 96.3% | χ2 = 17.98 | 0.0001 | 5.87 (1.53-22.45) | 20.80 (2.59-166.84) | 3.55 (0.34-36.56) |
| Yes | 24.7% | 12.0% | 44.4% | 3.7% | |||||
| Days in treatment –12 months | 135.42 (10.84) | 149.39 (23.26) | 140.82 (15.63) | 114.30 (19.16) | F = 0.83 | 0.438 | -- | -- | -- |
1
MRC=Motivated Referral Condition; MRC+I=Motivated Referral Condition + Incentives; SRC=Standard Referral Condition
2
F test degrees of freedom = 2, 110; x2 degrees of freedom = 2
3
Includes outpatient drug-free treatment and short-term detoxification
4
n=97 (i.e., those leaving the first treatment episode)