Is it better to use two elastographic methods for liver fibrosis assessment?

Table 2 Predictive value of transient elastography and acoustic radiation force impulse in combination for F ≥ 2 and F = 4 (%)

	F≥2							F = 4
	Cut-off	Se	Sp	PPV	NPV	Accuracy		Cut-off	Se	Sp	PPV	NPV	Accuracy
TE + ARFI	6.7 kPa and 1.2 m/s	60.5	93.3	96.8	41.1	68		12.2 kPa and 1.8 m/s	84.9	94.4	84.9	94.4	91.8
TE or ARFI	6.7 kPa or 1.2 m/s	86.1	71.1	90.9	60.3	82.7		12.2 kPa or 1.8 m/s	96.2	83.3	68	98.3	86.8

TE: Transient elastography; ARFI: Acoustic radiation force impulse; AUROC: Area under the receiver operating characteristic curve; Se: Sensitivity; Sp: Specificity; PPV: Positive predictive value; NPV: Negative predictive value.