Internal validation of the nomogram model for predicting the risk of critical conditions in patients with hypertension in pregnancy
hypertensive
For the modeling group, ROC curve was plotted to validate discrimination of the nomogram prediction model. The results showed that the AUC of the nomogram for predicting the risk of critical conditions was 0.926 (95% CI = 0.887–0.964), with good discrimination, as shown in Fig. 
Receiver operating characteristic and correction curve of nomogram model for predicting the severity of hypertensive patients during pregnancy