Table 5.

Fidelity to MI during intervention

MI behaviour	Counsellor A	Counsellor B	Threshold for acceptable MI
Global rating, “MI spirit”a	3.67	3.62	3.5
Reflection to questions ratiob	3.0	1.9	1
Open questions (%)c	53	19	50
Complex reflections (%)d	45	58	40

MI consistent behaviour of the MI counsellor in relation to thresholds for acceptable MI

Values are means of MI counsellor behaviour during MI sessions

^aHolistic evaluation of counsellors expression of MI spirit (equal collaboration with client about the change + evoking client speech about the change + supporting client’s autonomy regarding the change)

^bFrequency count of counsellor behaviour regarding the specific MI technique reflections in relation to questions; ratio between the total number of questions and reflections stated by the counsellor

^cFrequency count of counsellor behaviour regarding questions; percentage of open questions posed by the counsellor

^dFrequency count of counsellor behaviour regarding the specific MI technique reflections; percentage of complex reflections stated by the counsellor