Table 2:

Number and percentage of each modality per rank of ordering physician from baseline to control phases^a

	Baseline		I-Phase I		I-Phase II		I-Phase III		C-Phase I		C-Phase II		C-Phase III
	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%
Attending
RB-MRI	16	20.3	4	26.7	5	18.5	3	10.0	14	20.9	6	8.8	9	12.7
UF-MRI	18	22.8	4	26.7	16	59.3	10	33.3	31	46.3	34	50.0	38	53.5
Head CT	16	20.3	2	13.3		0.0	1	3.3	4	6.0	6	8.8	3	4.2
Head US	29	36.7	5	33.3	6	22.2	16	53.3	18	26.9	22	32.4	21	29.6
Attending total	79	38.5	15	24.2	27	31.4	30	32.6	67	70.5	68	58.1	71	63.4
Resident
RB-MRI	22	17.5	5	10.6	5	8.5	5	8.1	4	14.3	5	10.2	7	17.1
UF-MRI	19	15.1	27	57.4	33	55.9	35	56.5	11	39.3	22	44.9	16	39.0
Head CT	46	36.5	3	6.4	6	10.2	6	9.7	6	21.4	8	16.3	6	14.6
Head US	39	31.0	12	25.5	15	25.4	16	25.8	7	25.0	14	28.6	12	29.3
Resident total	126	61.5	47	75.8	59	68.6	62	67.4	28	29.5	49	41.9	41	36.6
Grand total	205	100.0	62	100.0	86	100.0	92	100.0	95	100.0	117	100.0	112	100.0

Note:—I-Phase indicates improvement phase; C-phase, control phase; RB-MRI, routine brain MRI.

^aDuration of baseline was 3 months, followed by 3 months of improvement (each phase for 1 month), and 3 months of control phases (each phase for 1 month).