搜索结果: 1-1 共查到“人口学 parity progression ratio”相关记录1条 . 查询时间(0.078 秒)
Cohort birth order, parity progression ratio and parity distribution trends in developed countries
birth order childbearing postponement cohort analysis low fertility developed countries parity distribution parity progression ratios
2008/12/12
Major changes in childbearing patterns are continuously taking place in the majority of low-fertility populations with postponement being virtually universal. Almost everywhere the two-child family be...