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Table 5 Comparison of diagnostic efficacy of different grading systems among five doctors

From: Diagnostic performance of simplified TI-RADS for malignant thyroid nodules: comparison with 2017 ACR-TI-RADS and 2020 C-TI-RADS

Sen (%)

Spe (%)

Accuracy (%)

PPV (%)

NPV (%)

Youden index

ICC

Kappa

C-TI-RADS

0.84 (0.78–0.88)

 A

84.44

87.88

85.37

95.00

67.44

0.72

  

 B1

77.78

93.94

82.11

97.22

60.78

0.72

0.69K1

 B2

81.11

78.79

80.49

91.25

60.47

0.60

 C1

85.56

87.88

86.18

95.06

69.05

0.73

0.71K2

 C2

84.44

90.91

86.18

96.20

68.18

0.75

ACR-TI-RADS

0.86 (0.82–0.90)

 A

98.89

54.55

86.99

85.58

94.74

0.53

  

 B1

98.89

42.42

83.74

82.41

93.33

0.41

0.68K1

 B2

98.89

60.61

88.62

87.25

95.24

0.60

 C1

97.78

72.73

91.06

90.72

92.31

0.71

0.67K2

 C2

98.89

66.67

90.24

89.00

95.65

0.66

sTI-RADS

0.88 (0.84–0.91)

 A

97.78

90.91

95.93

96.70

93.75

0.89

  

 B1

95.56

93.94

95.12

97.73

88.57

0.90

0.78K1

 B2

95.56

84.85

92.68

94.51

87.50

0.80

 C1

92.22

84.85

90.24

94.32

80.00

0.77

0.73K2

 C2

94.44

81.82

91.06

93.41

84.38

0.76

  1. A represents pro. Zhang; B1 represents attending doctor Cheng; B2 represents attending doctor Li; C1 represents residency Zheng; C2 represents residency Zhang. K1 represents the Kappa value of B1 and B2; K2 represents the Kappa value of C1 and C2;