Table 5. Diagnostic capability of STE in identifying significant fibrosis, severe fibrosis and cirrhosis.

Distinction	P value	AUC (95% CI)	Cutoff values	Accuracy (%)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
≥ Stage 2 (n=67 vs. n=35)	<0.001	0.82 (0.73–0.89)	9.07 kPa (1.74 m/s)	80.4	79.1	80.0	88.3	66.7
≥ Stage 3 (n=30 vs. n=72)	<0.001	0.87 (0.78–0.93)	9.97 kPa (1.82 m/s)	77.5	93.3	70.8	57.1	96.2
Stage 4 (n=17 vs. n=85)	<0.001	0.91 (0.83–0.96)	10.48 kPa (1.87 m/s)	76.5	100	71.8	41.5	100

STE, sound touch elastography; AUC, area under the receiver operating characteristic curve; CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value.