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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Behav Res Ther. 2013 Nov 12;52:26–34. doi: 10.1016/j.brat.2013.11.001

Table 6.

Results of Multi-Level Models Predicting Number of Sessions until Dropout using session 3 WAI Scores (n = 133) after using Backwards Stepwise Elimination. Blank spaces mean that the measure was not included in the final model. Predictors that are not presented here never met criteria for inclusion in the final model (p < 0.15).

Model Regression coefficients
Intercept Symptoms at intake Patient level WAI-P Therapist level WAI-P
Null b −3.57** 0.00
Exp (b) 0.03 1.00
WAI Total b −3.63** 0.01 −0.02* −0.10**
Exp (b) 0.03 1.01 0.98 0.90
WAI Task b −3.65** 0.01 −0.07* −0.27**
Exp (b) 0.03 1.01 0.93 0.76
WAI Bond b −3.59** 0.01 −0.05 −0.25**
Exp (b) 0.03 1.01 0.95 0.78
WAI Goal b −3.63** 0.00 −0.34**
Exp (b) 0.03 1.00 0.71

Note. WAI-T = Working Alliance Index – Therapist version; WAI-P = Working Alliance Index – Patient version; b = Cox regression coefficient for prediction of number of sessions until dropout; Exp(b) = Relative risk for dropout.

*

p < 0.05.

**

p < 0.01.