抽样调查福州市1988年足月正常新生儿3116例,按其母亲育龄分组,应用离差等级评价法,将出生体重中等及以上和中等以下的不同育龄组作逐级卡方检验,结果表明,母亲育龄对新生儿体重影响呈现一定规律性,以新生儿体重为指标,反证母亲合适的育龄在24～31岁之间。 A total of 3116 full-term newborns were surveyed in Fuzhou City in 1988 according to their mother’s age of childbearing. According to the variance grade evaluation method, the level-based chi-square test was conducted among different fertility groups with medium and above birth weight and below middle level. The effect of mother’s childbearing age on newborn’s weight shows a certain regularity. Taking neonatal weight as an index, it can testify that mother’s appropriate childbearing age is between 24 and 31 years old.