26 November 2019
For many years, researchers at IIASA, under the leadership of Warren Sanderson and Sergei Scherbov, have shown that traditional measures of age and aging do not capture the changing characteristics and capabilities of people. Older people today are generally fitter and healthier than ever before and live much longer. Sanderson and Scherbov have provided additional measures that take longevity, among other characteristics of people, into account. The European Commission funded a 5-year project dedicated to those measures - the Reassessing Aging from a Population Perspective (ReAging) project which was led by IIASA World Population Program Deputy Director Sergei Scherbov.
A complete description of the new measures of population aging developed at IIASA appears in a new book by Sanderson and Scherbov titled "Prospective Longevity: A New Vision of Population Aging" that will be published on 29 November 2019 by Harvard University Press.
UN uses IIASA research to assess history and likely future of population aging
Two recent UN reports, World Population Ageing 2019: Highlights and Profiles of Ageing 2019 use new measures of population aging developed at IIASA. These measures provide policy makers all over the world with a clearer understanding of how population aging has occurred in their countries in the past and how it is likely to evolve in the future. Through the UN, IIASA measures of population aging are now easily available for virtually all countries of the world. The inclusion of a IIASA-developed measure of population aging is a milestone that reflects a growing recognition that traditional measures no longer reflect the changing face of aging around the world.
UK uses IIASA research to assess its prospects for aging and the relationship between measures of population aging and health
A recent report by the UK’s Office of National Statistics entitled Living Longer: Is Age 70 the New Age 65? uses the new approach to population aging pioneered at IIASA. The report contains an innovative section on the historical relationship between health and measures of population aging. It concludes that IIASA’s approach is more consistent with changes in health over time than is the conventional approach. The Office of National Statistics report is an example of how IIASA’s research on population aging is increasingly being applied to aid in policy discussions.
Last edited: 26 November 2019
IIASA Re-Aging Project
Gietel-Basten S & Scherbov S (2019). Is half the world’s population really below ‘replacement-rate’? PLoS ONE 14 (12): e0224985. DOI:10.1371/journal.pone.0224985.
Gietel-Basten S & Scherbov S (2019). Exploring the ‘True Value’ of Replacement Rate Fertility. Population Research and Policy Review DOI:10.1007/s11113-019-09561-y. (In Press)
US Aging Data Sheet 2019; Russian Demographic Data Sheet 2016,2019; Aging Data Sheet 2018; European Demographic Data Sheet 2018,2016
International Institute for Applied Systems Analysis (IIASA)
Schlossplatz 1, A-2361 Laxenburg, Austria
Phone: (+43 2236) 807 0 Fax:(+43 2236) 71 313