Table 2. Regression Coefficients and Effects Sizes for Piecewise Growth Curve Models.
| Baseline Assessment | Change During Treatment | |||||||
|---|---|---|---|---|---|---|---|---|
| (Analysis #) Model | b | (95% CI) | t | d | b | (95% CI) | t | d |
| (1) Entire Sample | 24.7 5* | (23.09, 26.39) | 29. 42 | 19. 61 | -3.82* | (-4.22, -3.42) | -18.68 | -12.54 |
| (2) TR (Patient Level) × Time | ||||||||
| (3a) Understanding | -0.02 | (-0.21, 0.17) | -0.21 | -.02 | -0.12* | (-0.2, -0.04) | -2.87 | -.30 |
| (3b) Accepting | -0.07 | (-0.19, 0.06) | -1.07 | -.11 | -0.02 | (-0.08, 0.03) | -0.79 | -.08 |
| (3) TR (Therapists Level) × Time | ||||||||
| (2a) Understanding | -0.72 | (-1.49, 0.05) | -1.82 | -.19 | -0.34* | (-0.62, -0.06) | -2.40 | -.25 |
| (2b) Accepting | -0.24 | (-0.81, 0.33) | -0.84 | -.09 | -0.26* | (-0.47, -0.05) | -2.39 | -.25 |
| (4) TR (Therapist and Patient Level; main effects) × Time | ||||||||
| (4a) Understanding (Therapist) | -0.2 | (-0.95, 0.56) | -0.51 | -.05 | -0.32 | (-0.6, -0.03) | -2.15 | -.22 |
| (4a) Understanding (Patient) | -0.03 | (-0.22, 0.16) | -0.30 | -.03 | -0.1* | (-0.18, -0.02) | -2.35 | -.24 |
| (4b) Accepting (Therapist) | 0.21 | (-0.36, 0.79) | 0.7 2 | .07 | -0.32* | (-0.54, -0.1) | -2.82 | -.29 |
| (4b) Accepting (Patient) | -0.08 | (-0.19, 0.04) | -1.31 | -.14 | -0.01 | (-0.07, 0.05) | -0.24 | -.02 |
| (5) TR (Therapist and Patient Level; interaction) × Time | ||||||||
| (5a) Understanding (Therapist × Patient) | 0.13* | (0.05, 0.2) | 3.2 8 | .34 | -0.05 | (-0.09, 0) | -2.13 | -.22 |
| (5b) Accepting (Therapist × Patient) | 0.07* | (0.02, 0.11) | 2.7 9 | .29 | -0.02 | (-0.05, 0.01) | -1.47 | -.15 |
Note.
*
= p < .05;
TR = therapeutic relationship (Client Perception of Therapist Scale; Lorr, 1965); b = unstandardized regression coefficient; d = Cohen's d , .25, .50, and .80 for small, medium, and large effect sizes respectively (Cohen, 1988). For the TR × Time interactions, only the interaction terms are presented (the main effects were included in the model; however, only the coefficients for TR domains predicting the time parameters are displayed for brevity). Similarly, only the TR × Condition × Time coefficients are reported for the TR × Condition interactions despite including all main effects and two way interactions in the model.