Cross-data set performance of the breast cancer predictors trained on the individual and combined data sets (normalized by Z-score normalization) with respect to OS.

Significant AUC (0.6) are shown in bold. The training sets are listed in the column header and the testing sets are indicated in the row header of the table. Merged-zscore refers to the merged data set composed of the individual data set normalized separately by Z-score normalization.indicates that the predictor was trained from all data sets except the testing set. NA stands for Not Available.