Table 3.

Comparison of clinical events between patients with D-dimer ≤ 0.7 mg/L and > 0.7 mg/L.

Clinical events	All	D-dimer ≤ 0.70 mg/L	D-dimer > 0.70 mg/L	P value
	(n = 86)	(n = 44)	(n = 42)
Thrombotic events	4 (4.7%)	0 (0.0%)	4 (9.5%)	0.053
Mechanical ventilation requirement	6 (7.0%)	0 (0.0%)	6 (14.3%)	0.011
ECMO requirement	2 (2.3%)	0 (0.0%)	2 (4.8%)	0.236
All-cause Death	1 (1.2%)	0 (0.0%)	1 (2.4%)	0.488
Composite endpoint	6 (7.0%)	0 (0.0%)	6 (14.3%)	0.011

Data are expressed as counts and percentages. The Pearson Chi-Square or Fisher's Exact Test was used to test the difference between D-dimer groups, as appropriate.

ECMO extracorporeal membrane oxygenation; the composite endpoint was the composite of mechanical ventilation requirement, ECMO requirement, or all-cause death.