Mortality at Extreme Ages and Data Quality: The Canadian Experience

  • Robert Bourbeau
  • Bertrand Desjardins
Part of the International Studies in Population book series (ISIP, volume 4)

As the number of observations is ineluctably small at the extreme ages, the exact level and patterns of mortality at the upper end of the life table are difficult to measure. The problem is often enhanced by errors in age declarations in official documents due to underestimation or exaggeration, attraction for some ages ending with particular digits (age heaping), transcription errors, etc. Contrary to what one might expect, these errors are not specific to countries with poor registration systems. Studies by Coale and Kisker (1986, 1990), Condran et al. (1991), and Kannisto (1988, 1994), among others, have shown evidence of errors in age at death declarations in vital statistics and age reporting in censuses in developed countries also, sufficient to produce biases in mortality measurement at very old ages in particular (Preston et al. 1999).


Life Table Birth Registration Demographic Research Death Registration Canadian Experience 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer 2007

Authors and Affiliations

  • Robert Bourbeau
    • 1
  • Bertrand Desjardins
    • 1
  1. 1.Département de DémographieUniversité de MontréalCanada

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