© 1999 - 2008
Max-Planck-Gesellschaft

Decomposing demographic change into direct vs. compositional components

 

James W. Vaupel
Vladimir Canudas-Romo

 
VOLUME 7 - ARTICLE 1
 
Date Received: 26 Mar 2001
Date Published: 2 Jul 2002

http://www.demographic-research.org/volumes/vol7/1/

Bookmark this page
Send this article to a friend
   
PDF file Click the icon to view and/or download the PDF file.
Once you are in the PDF file, use your browser back button to return to this page.

Abstract
We present and prove a formula for decomposing change in a population average into two components. One component captures the effect of direct change in the characteristic of interest, and the other captures the effect of compositional change. The decomposition is applied to time derivatives of averages over age and over subpopulations. Examples include decomposition of the change over time in the average age at childbearing and in the general fertility rate for China, Denmark and Mexico. A decomposition of the change over time in the crude death rate in Denmark, Germany and the Netherlands is also presented. Other examples concern global life expectancy and the growth rate of the population of the world.

Author's affiliation
James W. Vaupel
Max Planck Institute for Demographic Research, Germany
Vladimir Canudas-Romo
Johns Hopkins University, United States of America

Keywords
components of change, decomposition, derivatives of averages, formal demography

Word count (Main text)
2296

Other Articles by the same author/authors (in Demographic Research)
file[19-35] An integrated approach to cause-of-death analysis: cause-deleted life tables and decompositions of life expectancy
file[19-30] The modal age at death and the shifting mortality hypothesis
file[14-7] The relative tail of longevity and the mean remaining lifetime
file[13-24] Lifesaving, lifetimes and lifetables
file[13-5] Changing mortality and average cohort life expectancy
file[13-3] Age-specific contributions to changes in the period and cohort life expectancy
file[8-7] Oldest Old Mortality in China
file[7-8] Life Expectancy at Current Rates vs. Current Conditions: A Reflexion Stimulated by Bongaarts and Feeney’s "How Long Do We Live?"
file[6-5] Dr. Väinö Kannisto: A Reflexion

Similar Articles (in Demographic Research)
file [16-7] Demographic transitions and children's resources: growth or divergence? (decomposition)
file [14-1] Tempo effects in mortality: An appraisal (formal demography)
file [13-20] Decomposition analysis of Spanish life expectancy at birth: Evolution and changes in the components by sex and age (decomposition)
file [12-7] A comparison of different methods for decomposition of changes in expectation of life at birth and differentials in life expectancy at birth (decomposition)

[ Back to previous page ]