20 April 2022>: Clinical Research
Effects of Interaction Between Gestational Hypertension and History of Preterm Birth on the Risk of Preterm Birth: An Analysis Based on the National Vital Statistics System Database
Xiaoqin Cao 1AE , Daoming Zu 2BCD , Yang Liu 1AE*DOI: 10.12659/MSM.935094
Med Sci Monit 2022; 28:e935094
Table 2 Logistic regression analyses of the influence of gestational hypertension and history of preterm birth on preterm birth.
Variables | Model 1 | Model 2 | Model 3 | |||||||
---|---|---|---|---|---|---|---|---|---|---|
OR | 95% CI | P | OR | 95% CI | P | OR | 95% CI | P | Standardized coefficient | |
GH | ||||||||||
No | Ref | Ref | Ref | |||||||
Yes | 2.700 | 2.672–2.729 | 2.635 | 2.607–2.664 | 2.604 | 2.573–2.635 | 0.143 | |||
HPB | ||||||||||
No | Ref | Ref | Ref | |||||||
Yes | 3.431 | 3.380–3.482 | 3.104 | 3.057–3.151 | 3.047 | 2.997–3.097 | 0.109 | |||
OR – odds ratio; CI – confidence interval; Ref – reference; GH – gestational hypertension; HPB – history of preterm birth. univariate analysis; the variables including age, race, and educational attainment of mother and father were adjusted; adjusted variables included age, race, and educational attainment regarding father and mother, pre-pregnancy BMI, weight gain during pregnancy, cigarette smoking before and during pregnancy, method of delivery, number of fetus, payment source for delivery, previous cesarean, pre-pregnancy diabetes, gestational diabetes, infection, eclampsia, sex of infant. |