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目的了解河北省不同孕龄新生儿出生体质量情况,制定河北省新生儿出生体质量标准,绘制不同孕龄新生儿出生体质量曲线,为胎儿生长发育状况的监测和评价提供参考依据。方法根据河北省各地区社会经济环境,随机分层抽样选取各级市县医疗机构,连续收集2014年全年新生儿胎龄和出生体质量数据。结果共纳入48 692例单胎活产儿进入本次研究,其中男性胎儿22 059例,占45%,女性胎儿26 633例,占55%。新生儿总体平均出生体质量为(3 314±508)g,其中男性胎儿平均出生体质量为(3 370±510)g,女性胎儿平均体质量为(3 267±502)g。新生儿出生体质量P3、P5、P10、P25、P50、P75、P90、P95、P97百分位数r2值均>0.98,提示拟合满意。结论本研究统计数据可代表河北省地区新生儿出生情况,统计得出不同胎龄、性别新生儿出生体质量参考标准,并绘制出参考曲线。
Objective To understand the birth weight of neonates at different gestational ages in Hebei Province, establish the birth weight standard of newborns in Hebei Province, and draw the birth weight curve of newborns at different gestational ages so as to provide reference for the monitoring and evaluation of fetal growth and development status. Methods According to the socio-economic environment of all regions in Hebei Province, randomized stratified sampling was adopted to select medical institutions at all levels and cities to continuously collect data on gestational age and birth weight of newborns in 2014. Results A total of 48 692 singleton live births were enrolled in this study. Among them, 22 059 male fetuses accounted for 45% and female fetuses 26 633 (55%). The average newborn birth weight was (3 314 ± 508) g, with an average birth weight of 3 370 ± 510 g for male fetuses and 3 267 ± 502 g for female fetuses. The birth weight of newborns at P3, P5, P10, P25, P50, P75, P90, P95, P97 percentile r2 values were> 0.98, suggesting that the fitting satisfaction. Conclusions The statistical data of this study can represent the birth of newborns in Hebei Province. The reference standard of birth mass of newborns of different gestational age and gender was obtained and the reference curve was drawn.