中文摘要：

目的获得不同胎龄正常足月儿身长胸围指数。方法采用横断面时间段整群取样现场调查方法,于2013—2015年完成16 388例不同胎龄新生儿的体质量、身长、顶臀长、头围、胸围的现场测量,用以制定不同胎龄正常足月儿身长胸围指数。结果最终获得正常足月儿13 776例的测量数据。随着胎龄增加,新生儿出生时身长胸围指数（BCI）、维尔维克指数（VI）、艾里斯曼指数（EI）均有所递增。男婴BCI、VI、EI小于女婴,差异有统计学意义（P〈0.05）。2015年的新生儿BCI、VI、EI与2005年有一定的差异。结论不同胎龄正常足月儿随胎龄增大胸廓丰满度不断提高,男性低于女性,本次数据与十年前相比有一定的差异。

英文摘要：

Objective To obtain the length-chest circumference index of normal term newborns in different gestational age.Methods By cross-sectional time cluster sampling fact-finding investigation method,the anthropometric data on 16388 newborns from 2013 to 2015 were measured,including birth weight,length,crown-rump length,head circumference,and chest circumference,to develop normal full-term infants height chest circumference index（BCI） in different gestational age.ResultsAnthropometric data of 13776 normal term infants were available at the end of the study.The BCI,Ververck Index（VI）,Elisma index（EI） were increasing with the gestational age at newborn.BCI,VI,EI in male is less than those of female with significant difference（P〈0.05）.There were some differences of newborn＇s BCI,VI and EI in 2015 than those in 2005.Conclusion Compared to ten years ago,chest fullness increased with gestational age at different gestational ages in normal full-term infants,and the chest fullness in male is less than that in female.