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目的：研究新生儿体重与胎盘重量的关系。方法：对１３００ 例足月新生儿体重与胎盘重量进行测量。结果：男婴平均体重为３３０５ ．１ ±４０１ ．９ｇ ，胎盘系数为０ ．１６７ ；女婴平均体重为３２１６ ．９ ±４０６ ．７ｇ ，胎盘系数为０ ．１６９ 。结论：①随着经济的发展，人民生活水平的提高，新生儿体重相应增加；②新生儿体重与胎盘重量高度相关，并建立两组回归方程。
Aims: To study the relationship between body weight and placental weight in neonates. Methods: The body weight and placental weight of 1300 full-term newborns were measured. Results: The average weight of a baby boy was 3305. 1 ± 401. 9g, placental coefficient is 0. 167; the average weight of girls is 3216. 9 ± 406. 7g, placental coefficient is 0. 169. Conclusions: ①With the development of economy and improvement of people’s living standard, the newborn’s weight will increase accordingly. ②The newborn’s weight is highly correlated with the weight of placenta, and the two regression equations are established.