Figure 6.

AUC performance of each class of prediction by hospital. AUC curves were plotted for each class (controlled, hyperglycemia, and hypoglycemia) by comparing the sensitivity and specificity at different cutpoints for each class individually (controlled vs. not controlled, hyperglycemic vs. not hyperglycemic, and hypoglycemic vs. not hypoglycemic). The AUC curves of Hospital 1 are the class-specific model performance in the test set and the AUC curves of Hospitals 2–5 are the class-specific model performances in the external validation sets.