Table 4 Receiver-operator curve (ROC) analysis for diagnosing fibrosis stage using liver surface nodularity program.

From: Development of liver surface nodularity quantification program and its clinical application in nonalcoholic fatty liver disease

Comparison

Threshold (LSN)

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

AUROC

p-value

F0 vs F1-F3

1.34

91.3 (21/23)

57.1 (4/7)

87.5 (21/24)

66.7 (4/6)

0.894

0.002

F0-1 vs F2&F3

1.43

91.7 (11/12)

66.7 (12/18)

64.7 (11/17)

92.3 (12/13)

0.856

0.001

F1 vs F2&F3

1.48

83.3 (10/12)

72.7 (8/11)

76.9 (10/13)

80.0 (8/10)

0.788

0.019

  1. Note.—Data in parentheses are raw data used to calculate percentages. AUROC: area under the receiver-operator curve; F: fibrosis grade; NPV: negative predictive value; PPV: positive predictive value.
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