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Table 4 Motivational interviewing mean scores by rater and inter-rater reliability for global dimensions and behaviour counts

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

Global dimensions

Rater 1 Mean (SD)

Rater 2 Mean (SD)

ICC(2,2)

95% CI Lower

95% CI Upper

Evocation

3.2 (1.0)

3.5 (0.7)

0.34

−0.58

0.73

Collaboration

3.3 (0.9)

3.2 (0.6)

0.37

−0.52

0.74

Autonomy/Support

3.1 (0.7)

3.4 (0.6)

Scale not reliablea

  

Direction

4.2 (1.2)

3.8 (1.1)

0.83

0.59

0.93

Empathy

3.6 (0.7)

3.6 (0.6)

0.53

−0.14

0.80

Spirit of Motivational Interviewing

3.2 (0.8)

3.3 (0.5)

0.33

−0.62

0.72

Behaviour counts

 Giving Information

12.3 (5.5)

9.1 (4.1)

0.86

0.67

0.94

 Closed Questions

3.0 (3.0)

2.3 (2.6)

0.65

0.16

0.85

 Open Questions

2.0 (1.7)

2.4 (1.4)

0.53

−0.13

0.81

 Simple Reflections

5.1 (3.9)

5.4 (4.4)

0.83

0.59

0.93

 Complex Reflections

0.9 (1.2)

0.4 (1.0)

0.63

0.11

0.85

 Motivational Interviewing Adherent

6.5 (4.3)

7.8 (5.1)

0.81

0.53

0.92

 Motivational Interviewing Non-adherent

8.2 (6.9)

4.8 (3.5)

0.37

−0.52

0.74

  1. aLanders [39]