[Epidemiological study on adverse pregnancy outcomes in Shaanxi province]

Objective: To understand the incidence and epidemiological characteristics of adverse pregnancy outcome in Shaanxi province. Methods: General information of the study was derived from the prevalence and risk factors of birth defects in Shaanxi province in 2010-2013. Descriptive epidemiological method was used to analyze the data of adverse pregnancy outcome. Results: The overall incidence of adverse pregnancy outcome was 25.45% during 2010-2013 (26.84% in 2010, 26.11% in 2011, 24.96% in 2012 and 24.80% in 2013, respectively). Fetal macrosomia and low birth weight accounted for 31.91% and 23.42%, spontaneous abortion and premature delivery accounted for 18.94% and 16.65%, while birth defects and embryo death in the palace accounted for 7.38% and 1.70%, respectively. There were significant differences in distribution of adverse pregnancy outcome among different age groups (P<0.001) and different years (P<0.05). Age was positively associated with risk on adverse pregnancy outcomes (P<0.001). The incidence of adverse pregnancy outcome were high in Liquan (37.49%), Wugong (35.50%) and Qianxian counties (35.13%). Conclusions: The overall incidence of adverse pregnancy outcome was 25.45% in Shaanxi. Fetal macrosomia, low birth weight and spontaneous abortion were the three major types of adverse pregnancy outcome, while age and area were related factors. Targeted strategies should be taken to reduce the incidence of adverse pregnancy outcome in Shaanxi.