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Ordinal Logistic Regression Model Independent External Validation Scores
| Control | Early KC | Mild KC | |
|---|---|---|---|
| Sensitivity | 0.84 | 0.57 | 0.63 |
| Specificity | 0.73 | 0.82 | 0.97 |
| Balanced accuracy | 0.79 | 0.69 | 0.80 |
Obtained from 41 new samples (19 healthy individuals, 14 RETICS grade I, and 8 RETICS grade II). Overall accuracy was 71% (95% CI, 55–84). McNemar's test indicated homogeneous results (P = 0.112).
