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Table 6 Alliance mean scores by rater and inter-rater reliability
| Scale items | Rater 1 Mean (SD) | Rater 2 Mean (SD) | ICC(2,2) | 95% CI Lower | 95% CI Upper |
|---|---|---|---|---|---|
| 1. Supportive encouragement | 4.9 (1.8) | 5.1 (1.3) | 0.58 | −0.01 | 0.83 |
| 2. Convey expertise | 4.1 (1.5) | 4.5 (1.0) | Scale not reliablea | ||
| 3. Therapist’s communication style | 4.4 (1.3) | 4.6 (0.6) | 0.07 | −1.26 | 0.61 |
| 4. Involvement | 4.8 (1.4) | 4.8 (1.1) | 0.73 | 0.34 | 0.89 |
| 5. Warmth | 4.8 (1.4) | 4.6 (1.3) | 0.81 | 0.54 | 0.92 |
| 6. Rapport | 4.3 (1.7) | 4.6 (1.2) | 0.73 | 0.35 | 0.89 |
| 7. Empathy | 3.8 (1.6) | 4.6 (1.3) | 0.79 | 0.50 | 0.91 |
| 8. Client self-discloses thoughts and feelings | 4.6 (2.1) | 4.5 (1.3) | 0.67 | 0.21 | 0.86 |
| 9. Client expresses emotions | 2.9 (1.6) | 2.6 (1.5) | 0.56 | −0.07 | 0.82 |
| 10. Client works actively with therapist’s comments | 3.1 (1.6) | 4.0 (1.0) | 0.52 | −0.17 | 0.80 |
| 11. Client shows confidence in therapy and therapist | 3.7 (1.6) | 4.0 (1.3) | 0.36 | −0.55 | 0.73 |
| 12. Client and therapist agree on the kind of changes to make | 3.2 (1.9) | 3.8 (1.4) | 0.65 | 0.17 | 0.86 |
| 13. Client and therapist share same sense about how to proceed | 3.6 (1.4) | 3.5 (1.4) | 0.51 | −0.19 | 0.80 |
| 14. Client and therapist agree on salient themes | 4.0 (1.2) | 3.8 (0.9) | 0.55 | −0.09 | 0.81 |
| Total score | 4.0 (1.1) | 4.2 (0.8) | 0.72 | 0.33 | 0.89 |
