Fig. 3. ROC curves for three feature sets derived from the three-stage expansion of variable groups in (A) the general ward and (B) the intensive care unit.
Abbreviations: LR, logistic regression; XGBoost, eXtreme Gradient Boosting; FS1, feature set 1; FS2, feature set 2; FS3, feature set 3.

Ann Lab Med 2025;45:209~217 https://doi.org/10.3343/alm.2024.0315