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本文讨论了777例第一胎新生儿出生时产妇和婴儿的情况,初产妇年龄中位数是25.1岁。初产妇随着年龄的增长,难产和手术机率上升呈正相关,因而较佳生育年龄在25岁左右,这对产妇健康和婴儿发育都是有利的。男女新生儿体重的均值做了 u 检验,P<0.01,男女婴儿在出生时体重均值差别有非常显著性意义。性比例做了探讨,女性和男性婴儿性比例为100:101,基本趋于平衡,男女出生的概率约为0.5.
This article discusses the number of mothers and infants born at birth in 777 first-birth infants. The median age at first birth was 25.1 years. Primipara growth with age, dystocia and surgery increased the chance of a positive correlation, and thus better birth age at 25 years of age, which is maternal health and infant development are favorable. The average weight of newborns of men and women did u test, P <0.01, male and female infants weight difference at birth have very significant significance. Sex ratio was discussed, the ratio of female to male infant was 100: 101, the basic balance, the probability of men and women born is about 0.5.