Table 4.
Results of the moderation analysis investigating alexithymia as a moderator of the association between the therapists’ alliance ratings and the outcome when controlling for depression.
| Outcome: PCS at follow-up | ||||||
|---|---|---|---|---|---|---|
|
Model summary | ||||||
| R | R2 | MSE | F | df1 | df2 | p-Value |
| 0.58 | 0.34 | 65.45 | 7.95 | 5.00 | 77.00 | <0.01 |
|
Model |
||||||
| Coefficient | SE | t | p-Value | LLCI | ULCI | |
| Constant | 51.28 | 21.25 | 2.41 | 0.02 | 8.97 | 93.59 |
| TAS-20 | −0.92 | 0.47 | −1.98 | 0.05 | −1.85 | 0.01 |
| HAQ_T | −8.21 | 5.01 | −1.64 | 0.11 | −18.18 | 1.76 |
| HAQ_T*TAS-20 | 0.20 | 0.11 | 1.83 | 0.07 | −0.02 | 0.41 |
| PCS at pre-treatment | 0.82 | 0.15 | 5.55 | <0.01 | 0.53 | 1.11 |
| PHQ-9 at pre-treatment | −0.08 | 0.18 | −0.41 | 0.68 | −0.44 | 0.29 |
|
Conditional effect of HAQ_T on PCS at follow-up at values of TAS-20 | ||||||
| TAS-20 values | Effect | SE | t | p-Value | LLCI | ULCI |
| 10th percentile: 31 | −2.13 | 1.96 | −1.09 | 0.28 | −6.04 | 1.77 |
| 25th percentile: 40 | −0.37 | 1.35 | −0.28 | 0.78 | −3.05 | 2.31 |
| 50th percentile: 49 | 1.39 | 1.27 | 1.09 | 0.28 | −1.14 | 3.93 |
| 75th percentile: 56 | 2.77 | 1.66 | 1.66 | 0.10 | −0.54 | 6.07 |
| 90th percentile: 62 | 3.94 | 2.15 | 1.83 | 0.07 | −0.34 | 8.23 |
PCS, Physical Component Summary of the SF-36 Health Survey; TAS-20, Toronto Alexithymia Scale; HAQ_P, Helping Alliance Questionnaire patient version; PHQ-9, Depression scale of the Patient Health Questionnaire; LLCI, lower level of the confidence interval; ULCI, upper level of the confidence interval.