The Effects of Childbirth Age on Maternal and Infant Outcomes in Pregnant Women

Background: To investigate the effects of childbirth age on maternal and infant outcomes in pregnant wom-en. Methods: The clinical data of 4552 singleton parturient women and their newborns treated in the Second People’s Hospital of Liaocheng, China from June 2015 to June 2017 were retrospectively analyzed. They were divided into group A (<20 yr old), group B (20-<30 yr old,), group C (30-<35 yr old), group D (35-<40 yr old), group E (≥40 yr old) according to the age of the parturient women. The incidence rates of pregnancy complications and adverse pregnancy outcomes of the pregnant and parturient women and their newborns in each group were compared. Results: With the increase of childbirth age, the incidence rates of pregnancy complications in pregnant wom-en were increased gradually (P=0.028, 0.038, 0.042, 0.025, 0.012). The incidence rates of adverse pregnancy outcomes were increased gradually with the increase of childbirth age (P=0.006, 0.026, 0.010, 0.028). After correction of factors including pre-pregnancy body mass index (BMI), parity, gravidity and educational level, the incidence rate of cesarean section was reduced and the incidence rate of premature birth was increased in group A compared with those in group B. The incidence rates of cesarean section, premature birth, postpar-tum hemorrhage of pregnant women and the transference of newborns into NICU in group C, D and E were higher than those in group B (P=0.002, 0.019, 0.043, 0.015). Conclusion: Both low and high age pregnancy can increase the incidence rate of adverse pregnancy out-comes.