Decomposing change in life expectancy: A bouquet of formulas in honor of Nathan Keyfitz’s 90th birthday | Zendy

James W. Vaupel | Zendy; Vladimir CanudasRomo | Zendy

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Decomposing change in life expectancy: A bouquet of formulas in honor of Nathan Keyfitz’s 90th birthday

Author(s) -

James W. Vaupel,

Vladimir CanudasRomo

Publication year - 2003

Publication title -

demography

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.099

H-Index - 129

eISSN - 1533-7790

pISSN - 0070-3370

DOI - 10.1353/dem.2003.0018

Subject(s) - life expectancy , pace , term (time) , demography , expectancy theory , longevity , honor , gerontology , psychology , population , sociology , geography , medicine , computer science , social psychology , physics , geodesy , quantum mechanics , operating system

We extend Nathan Keyfitz's research on continuous change in life expectancy over time by presenting and proving a new formula for decomposing such change. The formula separates change in life expectancy over time into two terms. The first term captures the general effect of reduction in death rates at all ages, and the second term captures the effect of heterogeneity in the pace of improvement in mortality at different ages. We extend the formula to decompose change in life expectancy into age-specific and cause-specific components, and apply the methods to analyze changes in life expectancy in Sweden and Japan.

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