Table 2

Specification of the diagnostic value of the Wells criteria and D-Dimer level for PE detection.

Variables	Clinical probability of PE^a)	Cut-off	Sen.	Spec.	PPV	NPV	AUC	P
Wells score	Total	3	75.00	35.87	9.2	94.3	0.557	0.497
D-dimer, mg/L	Total	1,447	87.50	63.04	17.1	98.3	0.735	0.003
	PE unlikely (N=67)	1,447	83.33	65.57	19.2	97.6	0.730	0.019
	PE likely (N=33)	1,962	99.00	78.12	22.2	99.0	0.781	<0.001

^a)Based on Wells score.

Abbreviations: AUC, area under the curve; NPV, negative predictive value; PE, pulmonary embolism; PPV, positive predictive value; Sen., sensitivity; Spec., specificity.

Blood Res 2021;56:150~155 https://doi.org/10.5045/br.2021.2021069