Table 5. Client and Therapist Working Alliance Inventory (WAI) as a Predictor of Posttreatment Readiness to Change and Drinking Outcomes at 9 Months Posttreatment Estimated From Logistic and Linear Regression Models Stratified by Treatment Group.
| MET (n = 131), SBNT (n = 42) | Action vs. preaction posttreatment | Abstinent/nonproblem drinker at 9 months later | DDD at 9 months later | PDA at 9 months later | ||||
|---|---|---|---|---|---|---|---|---|
| Odds ratio (95% CI) | P value | Odds ratio (95% CI) | P value | Coefficient (95% CI) | P value | Coefficient (95% CI) | P value | |
| Note. MET = motivational enhancement therapy; SBNT = social behavior and network therapy; CI = confidence intervals; DDD = drinks per drinking day; PDA = percentage days abstinent. | ||||||||
| a Model 1: Adjusted for age + gender + education + employment status + marital status + parenthood + treatment group + site. b Model 2: Model 1 + pretreatment PDA + pretreatment DDD + pretreatment Leeds Dependence Questionnaire + actively changing drinking pretreatment. c Site is a perfect predictor of outcome in this model therefore adjustment for site was not included for this model. | ||||||||
| Client WAI | ||||||||
| Model 1a | ||||||||
| MET | 1.16 [1.07, 1.26] | <.001 | 1.12 [1.03, 1.22] | .006 | −0.39 [−0.78, 0.02] | .05 | 0.40 [−0.80, 1.60] | .51 |
| SBNT | 0.91c [0.73, 1.14] | .43 | 0.99 [0.87, 1.11] | .82 | 0.17 [−0.40, 0.74] | .55 | 0.67 [−1.47, 2.81] | .53 |
| Test for interaction | p = .01 | p = .14 | p = .36 | p = .81 | ||||
| Model 2b | ||||||||
| MET | 1.16 [1.06, 1.26] | .001 | 1.12 [1.03, 1.23] | .007 | −0.55 [−0.88, −0.21] | .002 | 0.32 [−0.88, 1.51] | .60 |
| SBNT | 1.06c [0.75, 1.49] | .76 | 1.10 [0.89, 1.35] | .37 | 0.05 [−0.47, 0.57] | .84 | 0.57 [−1.71, 2.85] | .61 |
| Test for interaction | p = .01 | p = .09 | p = .07 | p = .90 | ||||
| Therapist WAI | ||||||||
| Model 1a | ||||||||
| MET | 1.05 [0.99, 1.12] | .10 | 1.07 [0.99, 1.15] | .08 | −0.13 [−0.49, 0.22] | .46 | 1.22 [0.16, 2.27] | .03 |
| SBNT | 0.96c [0.83, 1.11] | .57 | 1.00 [0.91, 1.11] | .97 | −0.16 [−0.60, 0.28] | .47 | −0.42 [−2.10, 1.26] | .61 |
| Test for interaction | p = .08 | p = .57 | p = .84 | p = .07 | ||||
| Model 2b | ||||||||
| MET | 1.05 [0.98, 1.12] | .19 | 1.08 [1.00, 1.17] | .05 | −0.15 [−0.46, 0.15] | .22 | 1.27 [0.24, 2.30] | .02 |
| SBNT | 0.94c [0.76, 1.15] | .52 | 1.02 [0.91, 1.15] | .70 | −0.14 [−0.54, 0.26] | .47 | −0.21 [−1.99, 1.57] | .81 |
| Test for interaction | p = .12 | p = .64 | p = .76 | p = .11 | ||||