Table 2 Improvement in the prediction accuracy of the fitted regression model in the testing replicates using the three collapsing methods
Method | Q1 (mean-square error) | Q2 (mean-square error) | Q4 (mean-square error) | Disease (average AUC score) |
|---|---|---|---|---|
Proportion collapsing | 0.1226466 | 0.0116719 | −0.0068168 | 0.0023503 |
Data-adaptive sum | 0.1193559 | 0.0027142 | −0.0080903 | 0.0015294 |
Weighted sum | 0.0779981 | 0.0080481 | −0.0060441 | 0.0013407 |