Table 1.

Baseline characteristics of study patients.

Variable	Overall (N = 215)	Discharged from ICU (N = 119)	Died in ICU (N = 96)	P-value
Female gender	69 (32.1)	34 (28.6)	35 (36.5)	0.242
Age, years	62.7 ± 15.4	56.9 ± 13.9	69.9 ± 14.2	< 0.001
Comorbidities
Hypertension	135 (62.8)	68 (57.1)	67 (69.8)	0.066
Diabetes	86 (40.0)	41 (34.5)	45 (46.9)	0.070
COPD	15 (7.0)	3 (2.5)	12 (12.5)	0.006
Smoking	3 (1.4)	0 (0.0)	3 (3.1)	0.087
Obesity	109 (50.7)	75 (63.0)	34 (35.4)	<0.001
Heart failure	15 (7.0)	2 (1.7)	13 (13.5)	< 0.001
Cirrhosis	1 (0.5)	0 (0.0)	1 (1.0)	0.447
Stroke	6 (2.8)	0 (0.0)	6 (6.2)	0.007
Bariatric surgery	2 (0.9)	2 (1.7)	0 (0.0)	0.503
Hyperlipidemia	47 (21.9)	23 (19.3)	24 (25.0)	0.325
Dementia	5 (2.3)	1 (0.8)	4 (4.2)	0.175
Autoimmune disorder	1 (0.5)	1 (0.8)	0 (0.0)	1.000
HIV	4 (1.9)	3 (2.5)	1 (1.0)	0.630
Solid neoplasm	5 (2.3)	3 (2.5)	2 (2.1)	1.000
Hematological neoplasm	3 (1.4)	1 (0.8)	2 (2.1)	0.587
Asthma	12 (5.6)	8 (6.7)	4 (4.2)	0.554
Non-dialysis CKD	14 (6.5)	6 (5.0)	8 (8.3)	0.408
CKD on dialysis	6 (2.8)	2 (1.7)	4 (4.2)	0.411
Coronary artery disease	24 (11.2)	10 (8.4)	14 (14.6)	0.192
Duration from symptom onset to hospital admission, days	7 [5; 9]	7 [5; 9]	6 [5; 8]	0.084
BMI	30.1 [26.6; 34.2]	31.2 [28.3; 35]	28.3 [25.5; 31.6]	<0.001
SpO2 at hospital presentation	91 [86; 95]	92 [88; 96]	90 [82.5; 95]	0.075
SAPS 3 score	49 [44; 55]	47 [42; 51]	54 [48; 59]	< 0.001
Duration from hospital admission to intubation date	3 [1; 5]	4 [1; 6]	3 [1; 5]	0.107

BMI: Body mass index; CKD: Chronic kidney disease; COPD: Chronic obstructive pulmonary disease; HIV: Human immunodeficiency virus; ICU: Intensive Care Unit; SAPS: Simplified Acute Physiology Score; SpO2: Arterial oxygen saturation.