Table 4 Parameters of the scoring model using different cut-off scores as decision thresholds
Decision threshold | Sensitivity | Specificity | Positive likelihood ratios | Negative likelihood ratios |
|---|---|---|---|---|
 > 4.0 | 99.30 | 17.10 | 1.20 | 0.04 |
 > 4.5 | 98.60 | 22.26 | 1.27 | 0.06 |
 > 5.5 | 97.20 | 31.29 | 1.41 | 0.09 |
 > 6.5 | 96.90 | 43.23 | 1.71 | 0.07 |
 > 7.0 | 95.80 | 50.65 | 1.94 | 0.08 |
 > 7.5 | 95.50 | 56.45 | 2.19 | 0.08 |
 > 8.0 | 92.00 | 61.61 | 2.40 | 0.13 |
 > 8.5 | 91.00 | 64.84 | 2.59 | 0.14 |
 > 9.0 | 89.20 | 71.29 | 3.11 | 0.15 |
 > 9.5 | 86.50 | 73.55 | 3.27 | 0.18 |
 > 10.0 | 84.70 | 76.45 | 3.60 | 0.20 |
 > 10.5 | 81.60 | 80.65 | 4.22 | 0.23 |
 > 11.0 | 80.20 | 83.23 | 4.78 | 0.24 |
 > 11.5 | 77.80 | 85.16 | 5.24 | 0.26 |
 > 12.0 | 76.40 | 87.74 | 6.23 | 0.27 |
 > 12.5 | 71.90 | 90.97 | 7.96 | 0.31 |
 > 13.0 | 70.10 | 92.26 | 9.06 | 0.32 |
 > 13.5 | 68.10 | 93.55 | 10.55 | 0.34 |
 > 14.0 | 66.70 | 95.48 | 14.76 | 0.35 |
 > 14.5 | 62.50 | 95.81 | 14.90 | 0.39 |
 > 15.0 | 57.60 | 96.77 | 17.87 | 0.44 |