Table 3 Cross-validation fold distribution with patient-level separation.
Fold | Training patients | Training images | Validation patients | Validation images | Pathology balance check |
|---|---|---|---|---|---|
Fold 1 | 4715 | 14,000 | 1179 | 3500 | χ² = 0.231, p = 0.891 |
Fold 2 | 4715 | 14,000 | 1179 | 3500 | χ² = 0.198, p = 0.923 |
Fold 3 | 4715 | 14,000 | 1179 | 3500 | χ² = 0.267, p = 0.847 |
Fold 4 | 4715 | 14,000 | 1179 | 3500 | χ² = 0.203, p = 0.915 |
Fold 5 | 4715 | 14,000 | 1179 | 3500 | χ² = 0.245, p = 0.872 |
