TABLE 1—

Race-Specific Baseline Patient Characteristics (n = 15 531)

	White (n = 12 554)	Black (n = 1701)	Other/Unknown (n = 1276)	P
Demographic variables
Age, mean	64.8	57.7	62.8	<.001
Male gender, %	40.3	37.6	41.1	.07
Insurance status, %				<.001
No insurance	1.1	2.4	0.6
Government insurance	56.9	44.6	51.4
Medicaid	5.0	24.7	10.0
Private insurance	36.8	27.9	37.4
Unknown	0.3	0.5	0.6
Comorbid disease, %
Cancer	19.7	13.8	26.3	<.001
Lung disease	18.9	17.5	15.2	.003
Heart failure	15.4	19.6	15.2	<.001
Physical examination findings, %
Pulse ≥ 110/min	17.3	20.5	17.8	.005
Systolic blood pressure < 100 mm Hg	10.3	11.1	11.1	.46
Respiratory rate ≥ 30/min	14.2	18.2	13.2	<.001
Oral temperature < 36°C	16.6	15.8	17.2	.57
Altered mental status	6.8	10.3	7.6	<.001
Oxygen saturation < 90%	8.0	7.8	7.8	.94
Risk classification, %				<.001
Class I	18.3	28.2	17.7
Class II	21.9	18.8	20.3
Class III	22.0	20.6	21.6
Class IV	16.8	12.0	15.7
Class V	21.1	20.4	22.7