Table 4.

Characteristics associated with the development of pulmonary embolism in COVID-19 patients with acute respiratory distress syndrome.

	COVID-19
Characteristics	Pulmonary embolism present n = 15	Pulmonary embolism absent, N = 27	P-value
Ventilatory ratio	2.047 (0.4207)	1.767 (0.2434)	P = 0.001*
RI ratio	0.487 (0.164)	0.496 (0.116)	P = 0.83
D-dimer, mcg/mL	5.53 (2.07)	2.65 (1.62)	P = 0.23
IL-6, pg/ml	721.27 (645.44)	148.89 (179.80)	P < 0.001*
CRP, mg/L	145 (122.64)	117.48 (89.767)	P = 0.41
Ferritin, ng/ml	661.067 (546.41)	549.22 (345.52)	P = 0.42
LDH, u/L	443.4 (348.087)	649.556 (372.877)	P = 0.09

^*P-values <0.05 were statistically significant (comparisons between the COVID-19 vs. the non-COVID-19 group of patients).