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Table 4 MITI summary scores during treatment delivery by treatment allocation group

From: Assessing treatment fidelity and contamination in a cluster randomised controlled trial of motivational interviewing and cognitive behavioural therapy skills in type 2 diabetes

MITI Domain

Attention control group (mean; SD)

Intervention group (mean; SD)

z-test (from mixed model)

95% confidence interval for mean difference

Global Spirit

2.63 (1.12)

4.03 (1.05)

z = 4.50, p < .001

0.81, 2.06

Global Empathy

3.40 (0.98)

4.23 (0.89)

z = 4.55; p < .001

0.49, 1.23

 

Attention control group (median; IQR)

Intervention group (median; IQR)

z-test (from Somers’ D)

 

Reflection-to-Question Ratio

0.50 (0.33–0.71)

0.44 (0.32–0.61)

z = −0.55; p = .58

 

Percent Open Questions

23.1 (13.3–37.5)

46.5 (33.3–57.1)

z = 4.17, p < .001

 

Percent Complex Reflections

55.6 (41.9–71.4)

53.8 (40.0–71.4)

z = 0.12, p = .90

 

Percent MI-Adherent

21.4 (10.0–35.0)

63.4 (33.3–83.3)

z = 3.68; p < .001