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目的探讨北京市多胎发生趋势及“普二”政策对多胎妊娠发生率的影响。方法采用北京市妇幼保健管理信息系统助产机构分娩上报数据,纳入2013-2015年北京市户籍孕产妇368 687例新生儿,采用SPSS 16.0软件对多胎分娩发生情况进行统计分析。结果 2013-2015年北京市户籍产妇多胎平均发生率2.85%(10 496/368 687),其中2013年发生率2.52%(2 635/104 715),2014年2.78%(3 769/135 622),2015年3.19%(4 092/128 350),多胎妊娠发生率呈逐年上升态势,围产儿死亡率多胎为1.2%明显高于单胎的0.32%(OR=3.931,95%:3.277~4.715);多胎妊娠分娩足月胎儿(分娩≥37周)占比由2013年的56.5%上升到2015年的57.3%,差异有统计学意义(P<0.05),辅助生殖技术、高龄妊娠是多胎妊娠增加的重要影响因素。结论 “普二”政策放开,高龄人群增加以及辅助生殖技术的普及,北京市多胎妊娠发生率将进一步增加,控制辅助生殖多胎妊娠可能是降低围产儿死亡率的重要手段。
Objective To explore the impact of multiple births in Beijing and the prevalence of multiple pregnancy on the incidence of multiple pregnancies. Methods The maternal and child health management information system of Beijing Maternal and Child Health Management Information System was used to report the data of childbirth and included 368 687 newborns with registered permanent mothers in Beijing from 2013 to 2015. SPSS 16.0 software was used to analyze the incidence of multiple births. Results The average incidence of multiple births was 2.85% (10 496/368 687) in Beijing in 2013-2015, of which 2.52% (2 635/104 715) in 2013, 2.78% (3 769/135 622) in 2014, The incidence of multiple pregnancies increased year by year in 2015 (4. 092/128 350). The rate of perinatal mortality was 1.2% for multiple births and 0.32% for single births (OR = 3.931,95%: 3.277-4.715). The proportion of full-term fetuses with childbirth (≥37 weeks of childbirth) increased from 56.5% in 2013 to 57.3% in 2015, with statistical significance (P <0.05). Assisted reproductive technology and advanced pregnancy were associated with increased multiple pregnancy Important influencing factors. CONCLUSION: With the liberalization of general policy, the increase of elderly population and the popularization of assisted reproductive technology, the incidence of multiple pregnancy in Beijing will further increase. Controlling assisted reproductive multiple pregnancy may be an important means to reduce perinatal mortality.