Volume 6 - Article 1 | Pages 1–18

The Survivor Ratio Method for Estimating Numbers at High Ages

By A. Roger Thatcher, Väinö Kannisto, Kirill F. Andreev

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Date received:23 Apr 2001
Date published:04 Jan 2002
Word count:4843
Keywords:estimation techniques, high ages, population estimates, survivor ratio


Only a few countries have official population statistics which are sufficiently accurate to produce reliable estimates of death rates at high ages. For other countries, there are several methods which can be used to produce improved estimates. The choice is important for research on old age mortality. In 1999 the Max Planck Institute for Demographic Research undertook a research project to compare the performance of the three leading methods, using data for nine countries over 35 years. This paper describes the research and the results, which were unexpectedly simple. It also gives an authoritative account of the most successful method.

Author's Affiliation

A. Roger Thatcher - Office for National Statistics, United Kingdom
Väinö Kannisto - Max-Planck-Institut für Demografische Forschung, Germany
Kirill F. Andreev - United Nations, United States of America [Email]

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» Old age mortality in Eastern and South-Eastern Asia
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» The compression of deaths above the mode
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» A Method for Estimating Size of Population Aged 90 and over with Application to the U.S. Census 2000 Data
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» Sex differentials in survival in the Canadian population, 1921-1997
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» Measuring the compression of mortality
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» Finnish Life Tables since 1751
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