Table 2 Random Forest classifier performance
|  | Model | Accuracy overall model | Accuracy cross validation test set (mean ± SD) |
|---|---|---|---|
PET | Parameters | 21.1% | 19.0% ± 8.0% |
|  | + features | 26.7% | 23.1% ± 8.8% |
IHC | Parameters | 76.9% | 74.9% ± 10.9% |
|  | + features | 83.9% | 79.8% ± 10.2% |
PET + IHC | Parameters | 83.6% | 76.4% ± 11.0% |
|  | + features | 81.0% | 82.0% ± 10.6% |