Behavioral weight-loss treatment plus motivational interviewing versus attention control: lessons learned from a randomized controlled trial

Table 1 MI and control group fidelity ratings on the Motivational Interviewing Treatment Integrity (MITI) system

	MI group (n = 69)			Control group (n = 66)
Scores	Means	+ SD	Ranges	Means	+ SD	Ranges
Empathy	5.50	.44	5–6	1.50	.34	1–2
MI spirit	5.50	.44	5–6	1.50	.34	1–2
Giving information	0.14	.36	0–1	0.43	.16	0–4
Open-ended questions	11.0	3.8	5–20	5.57	3.30	1–11
Close-ended questions	0.43	1.09	0–4	28.93	15.53	10–62
Simple reflections	11.36	3.43	7–18	5.50	3.30	0–10
Complex reflections	11.07	4.25	5–21	0	0	0–0
MI-adherent behaviors	4.86	2.96	1–11	0.07	.27	0–1
MI-nonadherent behaviors	0	0	0–0	0	0	0–0
Reflection-question ratio^a	2.11	.81	1.14–4.60	0.18	.12	0– .40
	Percentages	+ SD	Ranges	Percentages	+ SD	Ranges
Percent open-ended questions^b	96.97	7.76	71–100	17.81	10.73	3–35
Percent complex reflections^c	48.77	8.40	38–65	0	0	0–0
Percent MI-adherent behaviors^d	100	0	100–100	100	0	100–100

MI motivational interviewing, SD standard deviation
^aReflection-question ratio = total reflections/(close-ended questions [CQ] + open-ended questions [OQ])
^bPercent open-ended questions = OQ/(OQ + CQ questions)
^cPercent complex reflections = complex reflections/total reflections
^dPercent MI-adherent behaviors = MI-adherent behaviors (MIA)/MIA + MI-nonadherent behaviors

ISSN: 1745-6215