Spleen Stiffness for Predicting Varices Needing Treatment: Comparison between Two Different Elastography Techniques (Point vs. 2D-SWE)

Table 3

Classification of subjects according to the optimal, rule-out, and rule-in SSM cut-off values.

	SSM (kPa)	Correctly classified (%)	value	Misclassified (%)	value
Optimal	2D-SWE	76.5		24.5
	pSWE	79.6		20.4
Rule-out	2D-SWE	96		4.0
	pSWE	92.1		7.9
Rule-in	2D-SWE	82.6		17.4
	pSWE	89.3		10.7

SSM: spleen stiffness measurements; Se: sensitivity; Sp: specificity; PPV: positive predictive value; NPV: negative predictive value; and AUROC: area under a receiver operating curve. Cut-off values with the higher sum of sensitivity and specificity were chosen. Cut-off values that optimized sensitivity were chosen. Cut-off values that optimized specificity were chosen.