General data
MILD PREECLAMPSIA, HYPERTENSION IN PREGNANCY, SEVERE PREECLAMPSIA, GESTATIONAL HYPERTENSION
The 531 gestational hypertension patients admitted to our hospital between October 2019 and January 2023 were randomly divided into a modeling group (427 cases) and a validation group (104 cases). Within the modeling group, patients were further categorized into a critical group (59 cases) and a non-critical group (368 cases) based on the presence or absence of critical conditions. Severe preeclampsia was classified as critical, while gestational hypertension and mild preeclampsia were classified as non-critical. The study was approved by the clinical ethics committee of our hospital and met the ethical standards, with informed consent obtained from the patients and their families. As shown in Fig. 
Flow chart of case collectionInclusion criteria were as follows: ① patients diagnosed with hypertension in pregnancy according to international diagnostic criteria [