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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: Ultrasound Med Biol. 2018 Aug 22;44(11):2209–2222. doi: 10.1016/j.ultrasmedbio.2018.07.003

Table 7.

Results for ARFI and 2D-SWE at different distance from the central axis

Test result
variable
AUROC Spearman’s ANOVA

Cut-off (m/s) Sensitivity Specificity Area (95%CI) SE Asymptotic Sig. r p p
ARFI 0cm 1.50 0.71 0.92 0.85(0.67–1.00) 0.090 0.013* 0.54 0.014* 0.442
2cm 1.42 0.71 0.92 0.80(0.56–1.00) 0.126 0.029* 0.55 0.012*
4cm 1.67 0.71 0.69 0.66(0.38–0.94) 0.142 0.251 0.38 0.100

2D-SWE 0cm 1.68 0.86 0.69 0.76(0.557–0.98) 0.111 0.057 0.31 0.182 0.850
2cm 2..48 0.57 0.85 0.73(0.48–0.97) 0.125 0.104 0.37 0.104
4cm 1.88 1.00 0.46 0.76(0.53–0.99) 0.119 0.063 0.34 0.148

AUROC is area under the receiver operating characteristic curve for predictive values for significant fibrosis (F≥2 METAVIR)

SE: standard error

Asymptotic Sig: asymptotic significant

ARFI: acoustic radiation force impulse

2D-SWE: two-dimensional shear-wave elastography