The contribution of rectangularization to the secular increase of life expectancy: an empirical study.

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Serval ID
serval:BIB_9C32A4BE76BF
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The contribution of rectangularization to the secular increase of life expectancy: an empirical study.
Journal
International Journal of Epidemiology
Author(s)
Rossi Isabelle A., Rousson Valentin, Paccaud Fred
ISSN
1464-3685 (Electronic)
ISSN-L
0300-5771
Publication state
Published
Issued date
2013
Peer-reviewed
Oui
Volume
42
Number
1
Pages
250-258
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't; Publication Status: ppublish; Methods
Abstract
BACKGROUND: In low-mortality countries, life expectancy is increasing steadily. This increase can be disentangled into two separate components: the delayed incidence of death (i.e. the rectangularization of the survival curve) and the shift of maximal age at death to the right (i.e. the extension of longevity).
METHODS: We studied the secular increase of life expectancy at age 50 in nine European countries between 1922 and 2006. The respective contributions of rectangularization and longevity to increasing life expectancy are quantified with a specific tool.
RESULTS: For men, an acceleration of rectangularization was observed in the 1980s in all nine countries, whereas a deceleration occurred among women in six countries in the 1960s. These diverging trends are likely to reflect the gender-specific trends in smoking. As for longevity, the extension was steady from 1922 in both genders in almost all countries. The gain of years due to longevity extension exceeded the gain due to rectangularization. This predominance over rectangularization was still observed during the most recent decades.
CONCLUSIONS: Disentangling life expectancy into components offers new insights into the underlying mechanisms and possible determinants. Rectangularization mainly reflects the secular changes of the known determinants of early mortality, including smoking. Explaining the increase of maximal age at death is a more complex challenge. It might be related to slow and lifelong changes in the socio-economic environment and lifestyles as well as population composition. The still increasing longevity does not suggest that we are approaching any upper limit of human longevity.
Pubmed
Web of science
Open Access
Yes
Create date
27/12/2012 14:06
Last modification date
25/09/2019 7:10
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