Fig. 3

ROC curves on the validation set. ROC curves for predicting preterm birth (PTB) risk on the validation set. Models and AUC values (95% CI) are: XGBoost (0.911, 0.887-0.935), Logistic Regression (0.872, 0.842-0.902), LightGBM (0.840, 0.806-0.873), and GBDT (0.879, 0.849-0.908).