全球智库信息集成服务系统(G2TT): The inverse relationship between life expectancy-induced changes in the old-age dependency ratio and the prospective old-age dependency ratio.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.tpb.2018.10.001
	The inverse relationship between life expectancy-induced changes in the old-age dependency ratio and the prospective old-age dependency ratio.
	Sanderson W; Scherbov S
发表日期	2019
出处	Theoretical Population Biology 125: 1-10
出版年	2019
语种	英语
摘要	Unlike other biological populations, the human population is experiencing long-run increases in life expectancy. Those lead to changes in age compositions not typical for other biological populations. Sanderson and Scherbov (2015a) demonstrated that, in many countries in Europe, faster increases in life expectancy lead to faster population aging when measured using the old-age dependency ratio and to slower population aging when measured using the prospective old-age dependency ratio that employs a dynamic old-age threshold. We examine this finding analytically and with simulations. We use an analytic decomposition of changes in mortality schedules into shift and compression processes. We show that shifts and compressions of mortality schedules push the two old-age dependency ratios in opposite directions. Our formal results are supported by simulations that show a positive effect of a mortality shift on the old-age dependency ratio and a negative effect of it on the prospective old-age dependency ratio. The effects are of opposite sign for a mortality compression. Our formal and simulation results generalize observed European trends and suggest that the inverse relationship between life expectancy and prospective old-age dependency would be observed more generally.
主题	World Population (POP)
关键词	Aging, Old-age dependency ratio, Prospective old-age dependency ratio, Life-table population, Mortality shift, Mortality compression
URL	http://pure.iiasa.ac.at/id/eprint/15576/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/131559
推荐引用方式 GB/T 7714	Sanderson W,Scherbov S. The inverse relationship between life expectancy-induced changes in the old-age dependency ratio and the prospective old-age dependency ratio.. 2019.

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