. 2012 Nov;130(5):e823–e830. doi: 10.1542/peds.2012-1285

TABLE 4.

Performance of Diagnostic Testing Based on CPG Specific Recommendations

Group	Hospitals, n (%)	Patients, n	% Received	P ^a	OR (95% CI)	P ^b
CBC count
No CPG	28 (68.3)	13 265	50.3	<.0001	Ref
CPG: obtain test	6 (14.6)	2660	57.2		1.3 (0.7–2.4)	.37
CPG: do not obtain	6 (14.6)	3340	39.4		0.6 (0.4–1.0)	.06
CPG: test not mentioned	1 (2.4)	445	72.1		2.6 (1.9–3.5)	<.001
Serum electrolytes
No CPG	28 (68.3)	13 265	28.8	.46	Ref
CPG: obtain test	2 (4.9)	504	29.6		1 (0.5–2.1)	.92
CPG: do not obtain	0 (0.0)	—	—		—	—
CPG: test not mentioned	11 (26.8)	5941	28.0		1 (0.5–1.8)	.90
Blood culture
No CPG	28 (68.3)	13 265	41.8	<.0001	Ref
CPG: obtain test	6 (14.6)	2818	40.9		1 (0.5–1.7)	.90
CPG: do not obtain	5 (12.2)	2916	24.9		0.5 (0.1–1.7)	.24
CPG: test not mentioned	2 (4.9)	711	60.9		2.2 (1.1–4.4)	.03
C-reactive protein
No CPG	28 (68.3)	13 265	17.6	<.0001	Ref
CPG: obtain test	2 (4.9)	1235	50.6		4.8 (2.3–10.2)	<.0001
CPG: do not obtain	4 (9.8)	1869	8.2		0.4 (0.1–1.8)	.24
CPG: test not mentioned	7 (17.1)	3341	13.1		0.7 (0.3–1.9)	.50
Viral testing (RSV, influenza)
No CPG	28 (68.3)	13 265	28.0	<.0001	Ref
CPG: obtain test	3 (7.3)	954	38.7		1.6 (1–2.6)	.04
CPG: do not obtain	3 (7.3)	2321	15.5		0.5 (0.2–1.5)	.19
CPG: test not mentioned	7 (17.1)	3170	25.5		0.9 (0.4–2.1)	.76
CXR
No CPG	28 (68.3)	13 265	63.6	<.0001	Ref
CPG: obtain test	8 (19.5)	4374	60.5		0.9 (0.6–1.4)	.57
CPG: do not obtain	0 (0.0)	—	—		—	—
CPG: test not mentioned	5 (12.2)	2071	61.3		0.9 (0.6–1.4)	.66

RSV, respiratory syncytial virus; —, no patients.

P values comparing differences in proportion of patients receiving testing based on specific mention in the CPG are unadjusted and aggregate (combining across hospitals).

P values are adjusted for hospital clustering.