Table 3.
ROC values of new Corvis ST parameters in identifying KE eyes from LASIK eyes.
| Parameter | AUC(95 %CI) | P | Youden index | Cut off | Sensitivity (%) | Specificity (%) |
|---|---|---|---|---|---|---|
| Max Inverse Radius | 0.850 (0.714, 0.938) | <0.001 | 0.565 | >0.227 | 82.61 | 73.91 |
| DA Ratio Max [2 mm] | 0.847 (0.710, 0.936) | <0.001 | 0.609 | >6.733 | 65.22 | 95.65 |
| Pachy Slope | 0.664 (0.509, 0.796) | 0.055 | 0.435 | >128.391 | 56.52 | 86.96 |
| DA Ratio Max [1 mm] | 0.750 (0.601, 0.866) | 0.001 | 0.565 | >1.779 | 78.26 | 78.26 |
| ARTh | 0.686 (0.533, 0.815) | 0.021 | 0.391 | ≤76.134 | 39.13 | 100.00 |
| Integrated Radius | 0.885 (0.756, 0.960) | <0.001 | 0.696 | >12.473 | 86.96 | 82.61 |
| SP-A1 | 0.851 (0.715, 0.938) | <0.001 | 0.652 | ≤62.422 | 78.26 | 86.96 |
| CBI | 0.543 (0.390, 0.691) | 0.148 | 0.087 | >0.999 | 100.00 | 8.70 |
ARTh, Ambrosio’s relational thickness horizontal; AUC(95 %CI): area under the ROC curve (95 % Confidence interval); CBI, Corvis biomechanical index; DA Ratio Max [2 mm], deformation amplitude Ratio Max [2 mm]; DA Ratio Max [1 mm], deformation amplitude Ratio Max [1 mm]; SP-A1, stiffness parameter at first applanation.