Table 5. Confusion matrix of XGBoost model on internal and external test sets.
| Internal Test Set | Actual | External Test Set | Actual | ||||
|---|---|---|---|---|---|---|---|
| BM | NBM | BM | NBM | ||||
| Predictive | BM | 778 | 973 | Predictive | BM | 7 | 5 |
| NBM | 311 | 4504 | NBM | 8 | 105 | ||
Notes.
- NMB
- no bone metastasis
- BM
- bone metastasis