Table 3. Functional Category: Utilization Rate (Pre- vs. Post—Intervention) by Average Billable Encounters/year.

		Whole group			High Utilization subgroup
Category	Arm	Pre	Post	P	Pre	Post	p	% Δ Arm	% Δ I/C Ratio
Total	Intervention	53.46	30.47	*<0.0001	67.26	38.91	< .0001	-42.1
	Control	14.76	15.32	0.1	67.58	50.28	< .0001	-25.6
		**<0.0001	<0.0001		0.95	0.0067			***-22.2
Clinical	Intervention	39.96	23.21	<0.0001	47.65	29.26	< .0001	-38.6
	Control	10.73	11.47	0.004	47.48	37.1	< .0001	-21.9
		<0.0001	<0.0001		0.96	0.02			-21.4
Imaging	Intervention	11.52	5.72	<0.0001	13.46	8.05	< .0001	-40.2
	Control	3.89	3.69	0.11	13.69	8.79	< .0001	-35.8
		<0.0001	<0.0001		0.84	0.48			-6.9
Laboratory	Intervention	9.82	5.55	<0.0001	12.33	7.44	< .0001	-39.7
	Control	2.62	2.52	0.29	7.8	7.53	0.79	-3.5
		<0.0001	<0.0001		< .0001	0.92			-37.5
Procedures	Intervention	2.15	1.69	0.006	2.67	3.79	0.01	41.9
	Control	1.66	1.52	0.43	2.52	3.71	0.27	47.5
		0.007	0.29		0.8	0.93			-3.6

*p row is within arms across phases

**p column is within phase across arms

*** change in ratio of Intervention/Control utilization