Volume 32 - Article 29 | Pages 827–834

The force of mortality by life lived is the force of increment by life left in stationary populations

By Tim Riffe

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Date received:06 May 2014
Date published:29 Apr 2015
Word count:1020
Keywords:age, fertility, formal demography, mortality, stationary population
Weblink:All publications in the ongoing Special Collection 8 "Formal Relationships" can be found at http://www.demographic-research.org/special/8/


Background: The age distribution and remaining lifespan distribution are identical in stationary populations. The life table survival function is proportional to the age distribution in stationary populations.

Objective: We provide an alternative interpretation of the life table when viewed by remaining years of life.

Conclusions: The functions describing the mortality of birth cohorts over age are identical to the functions describing the growth of death cohorts as time to death decreases in stationary populations.

Author's Affiliation

Tim Riffe - Euskal Herriko Unibertsitatea (University of the Basque Country), Spain [Email]

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