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Healthy life expectancy in 191 countries, 1999
C D Mathers1, R Sadana, J A Salomon
1Global Programme on Evidence for Health Policy, World Health Organization, Geneva, 1211 27, Geneva, Switzerland. mathersc@who.ch
Lancet (London, England)
|June 27, 2001
Summary
Healthy life expectancy (DALE) estimates reveal Japan
Area of Science:
- Global Health Metrics
- Epidemiology
- Demography
Background:
- Estimating healthy life expectancy is crucial for understanding population health.
- Previous global estimates were limited in scope and methodology.
- Disability-adjusted life expectancy (DALE) provides a comprehensive health measure.
Purpose of the Study:
- To present the first global estimates of DALE for 191 countries in 1999.
- To analyze the distribution of healthy life expectancy across different regions and demographics.
- To identify factors influencing variations in DALE.
Main Methods:
- Utilized incidence, prevalence, and disability data for 109 disease/injury causes.
- Analyzed 60 global health surveys.
- Applied Sullivan's method to calculate DALE for WHO member countries by sex and age.
Main Results:
- Japan recorded the highest DALE at birth (74.5 years).
- Sub-Saharan African nations faced the lowest DALE (<35 years) due to HIV/AIDS.
- Disability accounted for 18% of life expectancy in low-DALE countries, versus 8% in high-DALE countries.
Conclusions:
- Global DALE estimates highlight significant health disparities.
- Increases in health expenditure correlate with greater gains in DALE than total life expectancy.
- While women live longer, they experience more years with disability.
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