eprintid: 13891 rev_number: 11 eprint_status: archive userid: 353 dir: disk0/00/01/38/91 datestamp: 2016-10-25 12:55:06 lastmod: 2021-08-27 17:27:54 status_changed: 2016-10-25 12:55:06 type: article metadata_visibility: show item_issues_count: 1 creators_name: Sanderson, W.C. creators_name: Scherbov, S. creators_id: 1631 creators_id: 7113 creators_orcid: 0000-0002-0881-1073 title: A new perspective on population aging ispublished: pub divisions: prog_pop keywords: age/aging, historical demography, life expectancy, median age, population forecasting, prospective age abstract: In Sanderson and Scherbov (2005) we introduced a new forward-looking definition of age and argued that its use, along with the traditional backward-looking concept of age, provides a more informative basis upon which to discuss population aging. Age is a measure of how many years a person has already lived. In contrast, our new approach to measuring age is concerned about the future. In this paper, we first explore our new age measure in detail and show, using an analytic formulation, historical data, and forecasts, that it is, in most cases, insensitive to whether it is measured using period or cohort life tables. We, then, show, using new forward-looking definitions of median age and the old age dependency ratio, how combining the traditional age concept and our new one enhances our understanding of population aging. date: 2007-01-16 date_type: published publisher: Max Planck Institute for Demographic Research id_number: doi:10.4054/DemRes.2007.16.2 creators_browse_id: 265 creators_browse_id: 270 full_text_status: public publication: Demographic Research volume: 16 number: 2 pagerange: 27-58 refereed: TRUE issn: 1435-9871 coversheets_dirty: FALSE fp7_project: no fp7_type: info:eu-repo/semantics/article citation: Sanderson, W.C. & Scherbov, S. ORCID: https://orcid.org/0000-0002-0881-1073 (2007). A new perspective on population aging. Demographic Research 16 (2) 27-58. 10.4054/DemRes.2007.16.2 . document_url: https://pure.iiasa.ac.at/id/eprint/13891/1/A%20new%20perspective%20on%20population%20aging.pdf