Statistical analysis SPSS was conducted to compare the frequency of risk factors using Fisher’s exact test,
chi-square, Student’s t-tests, as well as multivariate logistic regression was conducted to identify independent
risk factors. The results showed that chronic hypertension, prenatal hypertension, family history of preeclampsia,
diabetes, high BMI, nulliparity, previous preeclampsia history and low education level were identified as risk
factors for hypertensive disorders in pregnancy in this population; Moreover, diabetes, chronic hypertension and
family history of preeclampsia were found to be independent risk factors.