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RTVue XR OCT distinguishes Std between preclinical keratoconus group and normal control group Dev and Min-Max values correspond to the area, tangent, specificity, sensitivity, and Youden index under the ROC curve.
| Parameter | Preclinical keratoconus and normal control group | |||||
|---|---|---|---|---|---|---|
| cut-off point | sensitivity | specificity | AUC | Youden index | P value | |
| Std.Dev | −2.00 | 0.00 | 1.00 | 0.27 | 0.00 | 0.00 |
| Min-Max | 1.65 | 0.48 | 0.94 | 0.71 | 0.42 | 0.01 |
Note:Youden Index=Sensitivity + Specificity - 1.
