Fig. 2

The performance of the four in-hospital mortality predictive models. ROC curves of the four prediction models using all features to predict in-hospital mortality (A) in the internal test set and (B) in the external test set.

The performance of the four in-hospital mortality predictive models. ROC curves of the four prediction models using all features to predict in-hospital mortality (A) in the internal test set and (B) in the external test set.