Population Research ›› 2018, Vol. 42 ›› Issue (2): 29-38.
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Huang Kuangshi1 and Liu Hongyan2
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黄匡时1,刘鸿雁2
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Abstract: Based on the De Jure Population Database of the 121 National Monitoring Counties in 2013 from the National Health and Family Planning Commission,this study employs the revised Lee?Carter model to decompose the second birth intervals for women aged 20 to 50 between 1980 and 2013 intothree parts:the age?specific minimum second birth interval, the elasticity of the second birth intervalcross age,and the over?time change of the second birth interval. The results show that the minimumsecond birth interval ranges from 1. 2 to 1. 7 years. Increasing age of women is associated with increasing minimum second birth interval.The elasticity curve cross age demonstrates an S?shape,which flats between age 20~30,increases linearly between age 30~45,and declines slightly after age 45.Finally,the time effect on the second birth interval is negative between 1986 and 1996 while it is positive between 1980 and 1985 and between 1997 and 2013.These findings may help deepen our understanding of the age?specific pattern and time fluctuation of the second birth interval in China.
Keywords: Birth Interval, Lee?Carter Model, Second Birth Interval
摘要: 文章基于原国家卫生计生委 2013 年全国 121 个出生人口监测县的全员人口数据库,采用改进的 Lee?Carter 模型将 1980~2013 年每年 20~50 岁妇女的二孩生育间隔分解成年龄别的二孩最小间隔、年龄别的二孩间隔弹性和二孩间隔的时间效应 3 部分。 研究发现:二孩最低生育间隔为1.2~1.7 年,年龄越大,二孩生育间隔的最小值越大;年龄别的二孩生育间隔弹性呈现 S 型变动,20 ~30 岁之间在平稳中波动,而 30 岁之后、45 岁二孩生育间隔弹性呈现线性增加的态势,不过 45 岁之后略有下降;在 1986~1996 年的 10 年间,二孩平均生育间隔的时间效应为负,但是 1980 ~ 1985 年以及1997~2013 年这两个时期的二孩生育间隔的时间效应为正。
关键词: 生育间隔, Lee?Carter 模型, 二孩生育间隔
Huang Kuangshi and Liu Hongyan. Second Birth Interval in China:A Study Using the Revised Lee-carter Model[J]. Population Research, 2018, 42(2): 29-38.
黄匡时,刘鸿雁. 基于改进的Lee-carter 模型的二孩生育间隔研究[J]. 人口研究, 2018, 42(2): 29-38.
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https://rkyj.ruc.edu.cn/EN/Y2018/V42/I2/29