Volume 31 - Article 51 | Pages 1503–1524
Divergence without decoupling: Male and female life expectancy usually co-move
|Date received:||14 Nov 2013|
|Date published:||18 Dec 2014|
|Keywords:||Goodman-Grunfeld test, international comparisons, life expectancy, mortality, sex differences|
|Additional files:||readme.31-51 (text file, 4 kB)|
|demographic-research.31-51 (zip file, 119 kB)|
Background: Divergence of male and female life expectancy is a well-documented phenomenon. Co-movement is a heretofore-neglected aspect of changes in male and female mortality.
Objective: We develop a new framework for life expectancy sex differentials in time series, using co-movement/anti-movement and convergence/divergence.
Methods: We apply this framework to the Human Mortality Database (HMD), assessing co-movement between male and female life expectancy with the nonparametric test of Goodman and Grunfeld (1961).
Results: For every country in the HMD (except three with short spans of data), male and female mortality statistically co-move. This applies even in cases, including ones such as Russia that are well-discussed in the literature, that show extreme divergence between the sexes. The results are reasonably robust to subsetting with a 25-year time-window for all countries.
Conclusions: Male and female life expectancy co-move even when the life expectancy sex differential increases. The sex divergence in life expectancy needs to be (re-)considered in light of the fact that male and female life expectancy usually co-move, reflecting overall societal factors.
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