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Eur J Popul. 1987 May;2(3/4):335-60.

Targeting lifesaving: demographic linkages between population structure and life expectancy.



Life expectancy in a heterogeneous population can be increased by lowering mortality rates or by averting deaths at different ages, from different causes, or for different groups, as well as by changing the proportions of individuals in various risk groups, perhaps by altering the transition rates between groups. As the formula derived in this paper illustrates, there is a linkage that exists between population structure and life expectancy. The 1st 3 approaches used--the comparative-statistics, the dynamics, and the 'second-chance' approaches--yield analytical solutions that are general and that may facilitate insight. The 4th approach--computer simulation--is useful in attacking complex models that do not yield to the other 3 approaches. In addition to policy applications, the methods and formula presented in this paper are useful in gaining a deeper demographic understanding of how mortality rates, deaths, risk groups, and life expectancy are interrelated.

[Indexed for MEDLINE]

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