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Comprehensive & Cost Effective Laboratory Monitoring of HIV/AIDS: an African Role Model

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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.

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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.