Table 1.

Baseline characteristics of COVID-19 patients and healthy controls

	COVID-19			Healthy blood donors
	Regular wards	Specialized wards	Total
	N = 40	N = 20	N = 60	N = 86
Gender male, N (%)	28 (70%)	12 (60%)	40 (67%)	49 (57%)
Age, years, median (IQR)	61 (51–74)	62 (55–66)	61 (52–71)	49 (37 - 56)
BMI, kg/m2, median (IQR)	26 (24–32)	28 (25–32)	27 (24–32)
Caucasian origin	21 (52.5%)	13 (65%)	34 (57%)
Non-caucasian origin	19 (47.5%)	7 (35%)	26 (43%)
Previous thromboembolic disease, N(%)	4 (10%)	2 (10%)	6 (10%)
Anticoagulant treatment at inclusion, N (%)	8 (20%)	2 (10%)	10 (17%)
Diabetes, N (%)	8 (20%)	9 (45%)	17 (28%)
Smoking, N (%)	2 (5%)	3 (15%)	5 (8%)
COPD/asthma, N (%)	6 (15%)	4 (20%)	10 (17%)
Hypertension, N (%)	13 (33%)	12 (60%)	25 (42%)
Cardiovascular disease, N (%)	5 (13%)	4 (20%)	9 (15%)
Malignancy, N (%)	4 (10%)	4 (20%)	8 (13%)
Other diseases, N (%)	9 (23%)	6 (30%)	15 (25%)
Days with COVID symptoms at inclusion, median (IQR)	10 (7–14)	12 (9–16)	11 (7–14)
Days at hospital at inclusion, median (IQR)	1 (1–2)	2.5 (1–5)	1 (1–2)
Thrombosis at inclusion, N (%)	2 (5%)	4 (20%)	6 (10%)
Anticoagulant prophylaxis before ROTEM analysis, N (%)	21 (53%)	15 (75%)	36 (60%)

Blood groups, N = 58	N (%)
A	19 (33%)
B	6 (10%)
AB	3 (5%)
O	30 (52%)

	Regular wards	Specialized wards
Non-O	21 (75%)	7 (25%)	28 (48%)
O	18 (60%)	12 (40%)	30 (52%)

IQR interquartile range, BMI body mass index, COPD chronic obstructive pulmonary disease