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Table 6 Alliance mean scores by rater and inter-rater reliability

From: Treatment fidelity in the Camden Weight Loss (CAMWEL) intervention assessed from recordings of advisor-participant consultations

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
  1. aLanders [39]