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目的描述2013年北京市活产儿出生体重的分布规律,并对部分影响因素进行了分析和探讨。方法对“北京市新生儿疾病筛查信息管理系统”采集的206 498新生儿的出生体重进行描述性分析,并就性别、孕周、胎数、户籍、出生地点等因素进步比较分析。结果 2013年北京市新生儿的出生体重基本呈正态分布,平均出生体重为3 350.12g,男性平均出生体重3 400.28g,女性3 295.64g,男性巨大儿的发生率超过10%;随分娩孕周增加,新生儿出生体重亦增加,在孕42~43周达到峰值;分娩胎数越多,平均体重越低;远郊区县出生的新生儿平均出生体重高于城区出生的新生儿。结论 2013年北京市活产新生儿的平均出生体重高于全国平均水平,新生儿的性别、孕周、胎数、地域会对出生体重产生较明显的影响。
Objective To describe the distribution of birth weight in Beijing in 2013 and to analyze and discuss some influencing factors. Methods A descriptive analysis of the birth weight of 206 498 newborns collected by the Beijing Newborn Disease Screening Information Management System was made. The gender, gestational age, number of births, household registration, place of birth and other factors were compared and analyzed. Results The birth weight of newborns in Beijing was basically normal in 2013 with an average birth weight of 3 350.12 g. The average birth weight of males was 3 400.28 g and females 3 295.64 g. The incidence of males was over 10% Weekly increase in newborns also increased birth weight, 42 to 43 weeks of pregnancy peak; more childbirth fetus, the average weight is lower; suburbs counties born born newborn average birth weight is higher than urban born newborn. Conclusion The average birth weight of live birth newborns in Beijing was higher than the national average in 2013. The gender, gestational age, number of births and regions of newborns will have a significant impact on birth weight.