Volume 27 - Article 13 | Pages 365-376

How life expectancy varies with perturbations in age-specific mortality

By Tomasz Wrycza, Annette Baudisch

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Date received:13 Oct 2011
Date published:04 Sep 2012
Word count:1600
Keywords:life expectancy, mortality, pace of aging, perturbation
Weblink:All publications in the ongoing Special Collection 8 "Formal Relationships" can be found at http://www.demographic-research.org/special/8/


Background: A naturally arising question in demography is how a given change in mortality affects life expectancy. Scholars have targeted this question with different aims and from different perspectives.

Objective: We present and prove the central relationship between change in mortality and resulting change in e0, and we systematically apply it to investigate the effect of specific mortality perturbations.

Comments: Expressions for the change in e_0 resulting from a change in the parameters of the standard parametric mortality model in demography, the Gompertz-Makeham model, include well-known demographic quantities, which might prove useful for future studies.

Author's Affiliation

Tomasz Wrycza - Max Planck Institute for Demographic Research, Germany [Email]
Annette Baudisch - Max Planck Institute for Demographic Research, Germany [Email]

Other articles by the same author/authors in Demographic Research

» The pace of aging: Intrinsic time scales in demography
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» Variance in age at death equals average squared remaining life expectancy at death
Volume 30 - Article 50

» Entropy of the Gompertz-Makeham mortality model
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» Senescence vs. sustenance: Evolutionary-demographic models of aging
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