Volume 14 - Article 11 | Pages 217–236

Ages of origin and destination for a difference in life expectancy

By Elwood Carlson

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Date received:10 Jul 2005
Date published:16 Mar 2006
Word count:3300
Keywords:age decomposition, life tables, temporary life expectancy


Decomposition of a difference in life expectancies may identify ages at which the difference originates in mortality differences, or may identify age at which the difference results in different values of person-years lived (life table population). This study shows that the two approaches are orthogonally related to each other, and derives an origin-destination decomposition matrix in which summing in one direction produces Andreev's origin-decomposition results, while summing in the other direction produces destination-decomposition corresponding to directly-observed differences in nLx values.

Author's Affiliation

Elwood Carlson - Florida State University, United States of America [Email]

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