中文摘要：

目的研究不同胎龄胎儿（初生儿）体格发育均值与母亲分娩年龄的关系。方法采用横断面时间段整群取样实况调查方法,2005-2006年在深圳市保安区妇幼保健院调查了8141例不同胎龄胎儿（初生儿）体格发育状况,按母亲分娩年龄（≤18岁至≥39岁的每1岁）分组制定初生儿（胎儿）体格发育均值。结果初生儿（胎儿）体重、身长、坐高、头围、胸围均值都随着母亲分娩年龄增大呈现有规律的递增现象;≤23岁生育者,其分娩的初生儿（胎儿）上述5项发育均值明显〈24岁以后生育者;24~33岁,其分娩的初生儿生长发育均值随母亲分娩年龄增大而增长,生长发育均值稳定并处于较高水平,是母亲最佳生育年龄段。34岁以后,上述5项生长发育均值开始下降或大幅波动,生长发育均值不稳定。18~20岁、21~23岁、24~29岁、30~34岁、35~44岁年龄段分组的初生儿生长发育均值存在递增规律,χ2检验,组间比较差异均有统计学意义（P〈0.005,全部组）。结论母亲分娩年龄在24~33岁,其初生儿体重、身长、坐高、头围、胸围5项生长发育均值处于较高水平,是母亲最佳生育年龄段。母亲分娩年龄是胎儿宫内体格发育均值重要的影响因素。

英文摘要：

Objective To study the relationship between the different gestational ages fetal （newborn children） physical growth and development with mother childbearing age. Methods The cluster sampling 8141 cases about the physical growth and development of newborn child was surveyed in Shenzhen city in 2005 - 2006. Results Accompanying the mother childbearing age increasing the mean of fetus （newborn child ） in weight, height, sitting height, head circumference, chest circumference presents regularly increments phenomenon. The mother childbearing age in 23 or younger, the five development mean of newborn child were lower comparing with the mother childbearing age in 24 or above. In 24 - 33 childbearing ages, the mean of newborn growth were increased followed the mother age, the growth mean steady at a high level. That was the best childbearing age. After 34 ages the five growth mean began to decline or volatility. That was instability. In 18 -20 years old, 21 -23 years old, 24 -29 years old, 30 -34 years old and 35 - 44 years old age grouping, the mean of newborn child growth and development were increased regularity. Significant difference compared between the groups, ehi-square test, P 〈 0. 005 （ all group ） with statistical significance. Conclusion The mother childbearing age in 24 - 33 are the best childbearing age, the five growth mean of newborn steady at a higher level. The mother childbearing ages are important influence factor directed about the different gestational age fetus （newborn children ） intrauterine physical growth and development.