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Table 5 Motivational interviewing summary scores for behaviour counts and thresholds for proficiency

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

Summary score Mean (SD) Thresholds for proficiency from Moyers et al. 2010
Beginning proficiency Competency
Reflection to Question ratio 1.8% (2.3) 1% 2%
Percent Open Questions 54.6% (27.4) 50% 70%
Percent Complex Reflections 9.3% (9.2) 40% 50%
Percent Motivational Interviewing Adherent 53.1% (17.2) 90% 100%