Table 5 Diagnostic performances of four TI-RADSs.

From: Malignancy risk stratification of thyroid nodules: comparisons of four ultrasound Thyroid Imaging Reporting and Data Systems in surgically resected nodules

Parameter

TI-RADS H

TI-RADS P

TI-RADS K

TI-RADS R

Cut-off value

4a

3

4a

4a

Sensitivity (%)

98.9 (459/464)

96.8 (449/464)

99.1 (460/464)

99.4 (461/464)

Specificity (%)

49.0 (268/547)

71.3 (390/547)

52.5 (287/547)

45.2 (247/547)

PPV (%)

62.2 (459/738)

74.1 (449/606)

63.9 (460/720)

60.6 (461/761)

NPV (%)

98.2 (268/273)

96.3 (390/405)

98.6 (287/291)

98.8 (247/250)

Accuracy (%)

71.9 (727/1011)

83.0 (839/1011)

73.9 (747/1011)

70.0 (708/1011)

Az (95% CIs)

0.740 (0.711–0.766)

0.840 (0.816–0.862)

0.758 (0.730–0.784)

0.723 (0.694–0.750)

  1. Note — Numbers in parentheses are raw data. Numbers in brackets are 95% confidence intervals. PPV = positive predictive value, NPV = negative predictive value. Az = area under ROC curve.
Back to article page