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本研究分析了江苏省大丰县三十年来育龄妇女的终身生育率及活产儿性别比。结果表明,三十年中不同队列妇女的初婚年龄随着出生年代的推迟有逐步增高的趋势,婚龄中位数上升2.06岁,终身生育率下降非常显著,平均每一妇女活产数从3.61降至0.94(P<0.001)。不同年代活产儿的性别比基本稳定,说明我国计划生育政策未引起性别比例失调。结果也指出,年龄和婚龄对终身生育率影响较大,而文化水
This study analyzed the lifetime fertility rate and the sex ratio of live births among women of childbearing age in Dafeng County, Jiangsu Province in the past 30 years. The results show that the age of first marriage in women of different cohorts has gradually increased with the delay of birth years, the median age of marriage has increased by 2.06 years, and the lifetime fertility rate has dropped significantly. The average number of live births per woman falls from 3.61. To 0.94 (P<0.001). The sex ratio of live-born children in different years was basically stable, indicating that the family planning policy in China did not cause gender imbalance. The results also pointed out that age and marriage age have a greater impact on lifetime fertility, and cultural water