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Active life expectancy among elderly Japanese

I Tsuji1, Y Minami, A Fukao

  • 1Department of Public Health, Tohoku University School of Medicine, Sendai, Japan.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|May 1, 1995
PubMed
Summary
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Japanese elderly enjoy longer active life expectancy (ALE) than Americans, indicating a high quality of life in later years. This study highlights the importance of measuring ALE for global health comparisons.

Area of Science:

  • Gerontology
  • Public Health
  • Sociology

Background:

  • Assessing the quality of life for the elderly in Japan.
  • Estimating active life expectancy (ALE) to understand healthspan.
  • Investigating if long life in Japan compromises quality of life.

Purpose of the Study:

  • To estimate the active life expectancy (ALE) of the elderly in a Japanese urban population.
  • To compare the quality of life of Japanese elderly with that of the US elderly.
  • To determine if Japanese elderly live long lives at the expense of life quality.

Main Methods:

  • A probability sample of 3,459 elderly individuals in Sendai City, Japan, was followed from 1988 to 1991.
  • Survival and activities of daily living (ADLs) data were collected.

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  • Active life expectancy (ALE) was calculated using an increment-decrement life table method.

    • Main Results:

    • At age 65, ALE was 14.7 years for men and 17.7 years for women.
    • Active life constituted 91% of total life expectancy for men and 87% for women.
    • Japanese elderly had a longer ALE than their American counterparts, with comparable percentages of active remaining life.

    Conclusions:

    • It is premature to definitively state which country offers better functional status for the elderly.
    • International comparisons of ALE can promote global elderly health and function.
    • Standardization of ALE measurement is crucial for accurate international comparisons.