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Table 3 Sensitivity and specificity of the two models at each cutoff point

From: Establishment of clinical diagnosis model of Graves’ disease and Hashimoto’s thyroiditis

Model 1

Model 2

Cutoff point

Sensitivity (%)

Specificity (%)

Youden’s index

Cutoff point

Sensitivity (%)

Specificity (%)

Youden’s index

0.343

43.7

95

0.386

1.888

26.1

95

0.209

− 0.389

65.5

85

0.502

1.076

51.3

85

0.359

− 0.673

75.6

75

0.512

0.437

65.5

75

0.399

− 0.596

73.1

79.5

0.526

− 0.113

78.2

62.6

0.410

− 0.981

78.2

70

0.473

0.312

67.2

70

0.377

− 1.154

83.2

65

0.472

− 0.398

87.4

50

0.374

− 1.911

96.6

50

0.466

− 0.990

95

17.9

0.129

  1. Youden’s index = sensitivity + specificity − 1, the maximum value is the optimal value