. 2020 Jan 22;3(1):e1919607. doi: 10.1001/jamanetworkopen.2019.19607

Table 2. F Tests of Significance for Preference Variation Across Physicians During Nonovernight and Overnight Hours.

Variable	Shift
	Nonovernight, Arrival Between 7 am and Midnight		Overnight, Arrival Between Midnight and 7 am^a
	F Statistic	P Value	F Statistic	P Value
Age	2.1	<.001	1.2	.10
Sex	1.2	.11	0.8	.90
ESI score	4.5	<.001	1.3	.07
Combined comorbidity score	1.5	.004	1.2	.14

Abbreviation: ESI, Emergency Severity Index.

^{^a}

When all patients must be seen by the only physician on duty.