Table. 3 The confusion matrix and performance metrics of AI in the external test set
Prediction of positive lymph node metastasis | Prediction of negative lymph node metastasis | Performance metrics | |
|---|---|---|---|
Lymph node metastasis (+) | 18 | 4 | Sensitivity = 81.8% (18/22) |
Lymph node metastasis (−) | 12 | 127 | Specificity = 91.4% (127/139) |
Column total | 30 | 131 | Accuracy = 90.1% (145/161) |
Composite metrics | PPV = 60.0% (18/30) | NPV = 96.9% (127/131) | F1-score = 69.2% |
