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Abstract Objective: To investigate the reproduction features and pregnancy outcomes of multipara in Beijing after the twochild policy implementation. Methods: From November 1 to December 31 in 2016, clinical data of 2335 women who had come to 3 hospitals in Haidian district of Beijing for labor were collected. According to maternal parity, all included women were divided into primipara group or multipara group. The data of women in the two groups were analyzed to explore the maternal reproduction features and pregnancy outcomes of multipara after adjusting fertility policy. Results: Among the 2335 women, 1465 (62.7%) were primipara, and 870 (37.3%) were multipara. The proportion of the maternal aged equal to or more than 35 years was 15.6% in primipara group and 55.7% in multipara group. Compared to primipara group, the proportion of maternal gravidity equal to or more than 3 times, the rate of prepregnancy overweight and obesity, and scared uterus in multipara group were significant higher (P<0.05). After adjusted age and occupation factors, the rate of placenta accreta, cesarean section and macrosomia in multipara group were 2.52 times, 1.29 times, and 1.93 times of those in primipara group, respectively, which had statistical significant (P<0.05). Conclusion：After the implementation of the comprehensive two-child policy, the proportion of multipara with high-risk or elder multipara was increased significantly, and the occurrence of adverse pregnancy outcomes also increased. Maternal health management should be strengthened to promote maternal and child health.
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