Table 1.

Demographic and clinical characteristics of the study participants

Selected variables	All (n = 269)	ICU (n = 69)	Non-ICU (n = 200)	Dead (n = 25)	Alive (n = 244)
Sex (Male, %)	155 (57.6)	35 (50.7)	120 (60.0)	16 (64.0)	139 (57.0)
Age; Median (IQR); years	51 (33–65)	54 (40–67)	50 (31–64)	56 (47–67)	50 (31–65)
Duration from onset to sampling; Median (IQR); days	5 (3–7)	5 (4–8)	5 (3–7)	6 (4–9)	5 (3–7)
Dead patients	25 (9.3)	23 (33.3)	2 (1.0)
Comorbidities or conditions	162 (60.2)	45 (65.2)	117 (58.5)	19 (76.0)	143 (58.6)
Lung disease	34 (12.6)	6 (8.7)	28 (14.0)	1 (4.0)	33 (13.5)
Hypertension	27 (10.0)	10 (14.5)	17 (8.5)	3 (12.0)	24 (9.8)
Diabetes mellitus	24 (8.9)	12 (17.4)	12 (6.0)	4 (16.0)	20 (8.2)
Liver disease	24 (8.9)	5 (7.2)	19 (9.5)	4 (16.0)	20 (8.2)
Cardiovascular disease	22 (8.2)	10 (14.5)	12 (6.0)	3 (12.0)	19 (7.8)
Pregnancy	19 (7.1)	3 (4.3)	16 (8.0)	0 (0)	19 (7.8)
Kidney disease	19 (7.1)	6 (8.7)	13 (6.5)	1 (4.0)	18 (7.4)
Collagen disease	11 (4.1)	5 (7.2)	6 (3.0)	3 (12.0)	8 (3.3)
Cancer	9 (3.3)	3 (4.3)	6 (3.0)	0 (0)	9 (3.7)
Tuberculosis	6 (2.2)	2 (2.9)	4 (2.0)	1 (4.0)	5 (2.0)
HBV/HCV	6 (2.2)	1 (1.4)	5 (2.5)	1 (4.0)	5 (2.0)
Hematological disease*1	5 (1.9)	5 (7.2)	0 (0)	4 (16.0)	1 (0.4)
Bronchial asthma	4 (1.5)	3 (4.3)	1 (0.5)	0 (0)	4 (1.6)
Immunosuppressive agent usage*2	4 (1.5)	4 (5.8)	0 (0)	4 (16.0)	0 (0)
Others	16 (5.9)	4 (5.8)	12 (6.0)	2 (8.0)	14 (5.7)

Data are presented as numbers (%). IQR interquartile range. *1: significant differences after Bonferroni correction between ICU and non-ICU patients (Fisher’s exact test, corrected significance level p = 0.0033). *1, *2: significant differences after Bonferroni correction between Dead and Alive patients. (Fisher’s exact test, corrected significance level p = 0.0033). ICU intensive care unit, HBV/HCV hepatitis B or hepatitis C