Decomposing demographic change into direct vs. compositional components

James W. Vaupel; Vladimir Canudas-Romo

doi:10.4054/demres.2002.7.1

Decomposing demographic change into direct vs. compositional components

James W. Vaupel^*, Vladimir Canudas-Romo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1-13
Number of pages	13
Journal	Demographic Research
Volume	7
DOIs	https://doi.org/10.4054/demres.2002.7.1
Publication status	Published - 2 Jul 2002
Externally published	Yes

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AB - 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.

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JO - Demographic Research

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Decomposing demographic change into direct vs. compositional components

Abstract

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