Table 1. Characteristics of the study population.

	n	%
Race ( n  = 3,625)
Black	1,359	37.5%
White	347	9.6%
Other	1,919	52.9%
Ethnicity ( n  = 3,625)
Hispanic	1,361	37.5%
Age, y ( n  = 3,625)
< 50	708	19.5%
50–60	671	18.5%
60–70	836	23.1%
70–80	820	22.6%
> 80	590	16.3%
Gender ( n  = 3,625)
F	1,719	47.4%
M	1,905	52.6%
Not given	1	0.0%
Survival status ( n  = 3,625)
Survived	2,832	78.1%
Died > 48 h	793	21.9%
eGFR, mL/min ( n  = 3,538)
30–120	2,778	78.5%
15–30	366	10.3%
0–15	394	11.1%
D-dimer, µg/mL (initial 48 h, n  = 2,527)
< 1	779	30.8%
1–< 3	1,013	40.1%
3–< 10	457	18.1%
≥ 10	278	11.0%
Oxygen saturation (%) by pulse oximetry ( n  = 3,599)
95%	2,127	59.1%
90–95%	875	24.3%
< 90%	597	16.6%
Ventilator required initial 48 h ( n  = 3,625)
No	3,312	91.4%
Yes	313	8.6%
ICU admission required initial 48 h ( n  = 3,625)
No	3,373	93.1%
Yes	252	7.0%

Abbreviations: eGFR, estimated glomerular filtration rate; F, female; ICU, intensive care unit; M, male.