. 2021 Apr 12;4(4):e215697. doi: 10.1001/jamanetworkopen.2021.5697

Table 1. Patient Characteristics, Frequencies, and χ² Test P Values by COVID-19 Status.

Characteristic	COVID-19 status, No. (%)		P value^a
Characteristic	Negative (n = 5470)	Positive (n = 5470)	P value^a
Patient death
Yes	388 (7.1)	811 (14.8)	<.001
No	5082 (92.9)	4659 (85.2)	<.001
Complications
Yes	760 (13.9)	818 (15.0)	.11
No	4710 (86.1)	4652 (85.0)	.11
Hospital-acquired conditions
Yes	46 (0.8)	110 (2.0)	<.001
No	5424 (99.2)	5360 (98.0)	<.001
Patient safety indicators
Yes	129 (2.4)	183 (3.3)	.002
No	5341 (97.6)	5287 (96.7)	.002
Length of stay, median (IQR), d	10.7 (1.0-558.0)	10.0 (1.3-36.4)	.86

Abbreviation: IQR, interquartile range.

^{^a}

Mann-Whitney test P value for surgical patients by COVID-19 status.

Table 1. Patient Characteristics, Frequencies, and χ2 Test P Values by COVID-19 Status.