Abstract
The measurement of human longevity is one of the oldest topics in demography. The most widely used measure of longevity is the period life expectancy at birth which is calculated from age specific death rates by life table methods that originated with Graunt (1661) and have been standard in the field for well over a century. Period life expectancy equals the mean age at death in a synthetic cohort and it should be distinguished from the actual cohort life expectancies calculated for a group of individuals observed over long time periods.
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© 2008 Max Planck Institute for Demographic Research, Rostock
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Barbi, E. (2008). How long do we live? Demographic models and reflections on tempo effects: An introduction. In: Barbi, E., Vaupel, J.W., Bongaarts, J. (eds) How Long Do We Live?. Demographic Research Monographs. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-78520-0_1
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DOI: https://doi.org/10.1007/978-3-540-78520-0_1
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