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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