Volume 24 - Article 19 | Pages 455–468

Linking period and cohort life-expectancy linear increases in Gompertz proportional hazards models

By Trifon I. Missov, Adam Lenart

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Date received:07 Dec 2010
Date published:15 Mar 2011
Word count:1278
Keywords:cohort life expectancy, Gompertz mortality, Linear Shift Models, period life expectancy
Additional files:animated_figure_2 (pdf file, 2 MB)
Weblink:All publications in the ongoing Special Collection 8 "Formal Relationships" can be found at http://www.demographic-research.org/special/8/


In a Gompertz mortality model with constant yearly improvements at all ages, linear increases in period life expectancy correspond to linear increases in the respective cohort life expectancy. The link between the two measures can be given by a simple approximate relationship.

Author's Affiliation

Trifon I. Missov - Syddansk Universitet, Denmark [Email]
Adam Lenart - Syddansk Universitet, Denmark [Email]

Other articles by the same author/authors in Demographic Research

» The Gompertz force of mortality in terms of the modal age at death
Volume 32 - Article 36

» Unobserved population heterogeneity: A review of formal relationships
Volume 31 - Article 22

» Gamma-Gompertz life expectancy at birth
Volume 28 - Article 9

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