Table 3

ROC curve analysis for validation of NFI for F3 and F4 in 1898 patients with HCV infection

NFI
StageCut-off valueSpecificity (%)Sensitivity (%)AUC
F3>11.6475.161.10.609
F4>30.9472.147.10.831
  • AUC, area under the curve; HCV, hepatitis C virus; NFI, Novel Fibrosis Index; ROC curve, receiver operating characteristic curve.