Table 3.

Distribution of selected variables between nurse practitioners and physicians during the early and late era in the testing and treatment of bronchiolitis in the pediatric emergency department.

Variable	Nurse practitioner			Physician
	Early era (N=910) n (%)	Late era (N=688) n (%)	P-value	Early era (N=2,199) n (%)	Late era (N=1,236) n (%)	P-value
Diagnostic test
Chest radiography	350 (39)	238 (35)	0.116	853 (39)	406 (33)	0.001
Viral testing	207 (23)	143 (21)	0.36	474 (22)	265 (21)	0.966
RSV testing	153 (17)	52 (8)	<0.001	514 (23)	248 (20)	0.026
Treatment
Bronchodilator	588 (65)	286 (42)	<0.001	1372 (62)	571 (46)	<0.001
Corticosteroid	90 (10)	57 (8)	0.295	583 (27)	229 (19)	<0.001
Antibiotics	71 (8)	52 (8)	0.925	187 (9)	118 (10)	0.317
Any ToT	755 (83)	191 (71)	<0.001	1804 (82)	354 (72)	<0.001
Total ToT*	1 (1–2)	1 (0–2)	<0.001	2 (1–3)	1 (0–2)	<0.001

RSV=Respiratory syncytial virus; ToT=test or treatment

^*Median (interquartile range [Q1–Q3])