Scores Youden index Sensitivity (%) Specificity (%) PPV (%) NPV (%) Accuracy (%)
≥1 0.217 100 21.7 28.7 100 40.5
≥2 0.322 100 32.2 31.0 100 48.5
≥3 0.421 100 42.1 35.3 100 56.0
≥4 0.546 100 54.6 41.0 100 65.0
≥5 0.721 95.8 76.3 56.1 98.3 81.0
≥6 0.774 93.8 83.6 64.3 97.7 86.0
≥7 0.642 68.8 95.4 82.5 90.6 89.0
≥8 0.522 54.2 98.0 89.7 87.1 87.5
≥9 0.341 35.4 98.7 89.5 82.9 83.5
≥10 0.326 33.3 99.3 94.1 82.5 83.5