External validation of the nomogram model for predicting the risk of critical conditions in patients with hypertension in pregnancy
hypertensive
In the validation group, the AUC of the nomogram for predicting the risk of critical condition was 0.942 (95% CI = 0.872–0.998), 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