OBJECTIVE: To study the risk factors of pregnancy-induced hypertension syndrome (PIH) and their interactions and to develop measures to prevent PIH and related obstetrical complications. METHODS: Of 3205 pregnant women, 219 cases were found to have PIH. Data were gathered through questionnaires and measurement. Non-conditional logistic regression was used to identify the risk factors of PIH. RESULTS: Single-factor logistic showed that age and family income were related to PIH. When family had history of hypertension, an increased incidence was seen. Parity and history of natural abortion increased the incidence of PIH. The risk for PIH increased significantly with factors related to heavier weight during pregnancy. Multi-factors non-conditional logistic regression showed that age (OR = 1.801, 95% CI: 1.106 - 2.934), number of natural abortion (OR = 8.955, 95% CI: 4.118 - 19.427), family history of hypertension (OR = 8.955, 95% CI: 4.118 - 19.427), weight during pregnancy (OR = 3.062, 95% CI: 1.619 - 5.905) were related to the risks of PIH. CONCLUSION: It is necessary to strengthen screening program when women with advanced age, family history of hypertension, the numbers of natural abortion, weight of pregnancy in the PIH prevention strategy.
OBJECTIVE: To study the risk factors of pregnancy-induced hypertension syndrome (PIH) and their interactions and to develop measures to prevent PIH and related obstetrical complications. METHODS: Of 3205 pregnant women, 219 cases were found to have PIH. Data were gathered through questionnaires and measurement. Non-conditional logistic regression was used to identify the risk factors of PIH. RESULTS: Single-factor logistic showed that age and family income were related to PIH. When family had history of hypertension, an increased incidence was seen. Parity and history of natural abortion increased the incidence of PIH. The risk for PIH increased significantly with factors related to heavier weight during pregnancy. Multi-factors non-conditional logistic regression showed that age (OR = 1.801, 95% CI: 1.106 - 2.934), number of natural abortion (OR = 8.955, 95% CI: 4.118 - 19.427), family history of hypertension (OR = 8.955, 95% CI: 4.118 - 19.427), weight during pregnancy (OR = 3.062, 95% CI: 1.619 - 5.905) were related to the risks of PIH. CONCLUSION: It is necessary to strengthen screening program when women with advanced age, family history of hypertension, the numbers of natural abortion, weight of pregnancy in the PIH prevention strategy.