A New Method for Correcting Underestimation of Disabled Life Expectancy and an Application to the Chinese Oldest-Old.

This article demonstrates that disabled life expectancies that based on conventional multistate life-table methods are significantly underestimated because of the assumption of no changes in functional status between age x and death. We present a new method to correct the bias and apply it to data f...

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Published in:Demography Vol. 41; no. 2; pp. 335 - 362
Main Authors: Yi, Zeng, Danan, Gu, Land, Kenneth C.
Format: Article
Published: Springer Science & Business Media B.V. May 2004
Subjects:
Online Access:View this record in EBSCOhost
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        10.1353/dem.2004.0018
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        atl: A New Method for Correcting Underestimation of Disabled Life Expectancy and an Application to the Chinese Oldest-Old.
      aug:
        au:
          Yi, Zeng
          Danan, Gu
          Land, Kenneth C.
      su:
        Statistics
        Demography methodology
        Life expectancy
        Disabilities
        Older people
        China
      sug:
        subj:
          China
          Statistics
          Demography methodology
          Life expectancy
          Disabilities
          Older people
      ab: This article demonstrates that disabled life expectancies that based on conventional multistate life-table methods are significantly underestimated because of the assumption of no changes in functional status between age x and death. We present a new method to correct the bias and apply it to data from a longitudinal survey of about 9,000 oldest-old Chinese aged 80-105 collected in 1998 and 2000. In our application, the age trajectories of disability (activities of daily living—ADL), status-specific death rates, and the probabilities of transitions between ADL states of the oldest-old were investigated for the first time in a developing country. In this article, we report estimates of bias-corrected disabled and active life expectancies of the Chinese oldest-old and demonstrate patterns of large differences associated with initial status, gender, and advances in ages. Using combined information on ADL disabilities and length of having been bedridden before dying, we analyze gender and age patterns of the extent of morbidity before dying among the oldest-old and their implications for debates on the hypothesis of compression of morbidity. Reprinted by permission of the publisher.
      pubtype: Academic Journal
      doctype: Article
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    language: English
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