# Healthy Life Expectancy in Developing Countries in Asia

 Date conversion 08.03.2018 Size 8,69 Kb.

## Healthy Life Expectancy in Developing Countries in Asia

• Vicki L. Lamb
• Center for Demographic Studies
• Duke University

## Life Expectancy (LE)

• The expected number of years to be lived from age x (typically from birth)
• Measure of population health
• LE is increasing over time in Asia and around the world

## Life Expectancy (LE)

• The expected number of years to be lived from age x (typically from birth)
• Measure of population health
• LE is increasing over time in Asia and around the world
• Result: an increase in Asian populations, particularly at older ages

## Percent of total population aged 65 years and older, 1990-2002

• World Bank Indicators, 2003

## Major Question:

• What is the state of health associated with longer life ?
• More ill-health and disabilities, and greater suffering?
• Longer period of life in good health?
• Dynamic equilibrium between health and years of life?

## Healthy life expectancy (HLE)

• The expected number of years to be spent in good health from age x
• “Health” usually refers to functional abilities or self-rated health
• Advantage of HLE: ease in interpretation
• LE @ 65 = 20.9 yrs*; HLE @ 65 = 18.3 yrs*
• % of LE in good health: HLE/LE = .88
• *Females in Japan, 1995

## Estimating healthy life expectancy using the Sullivan (1971) method and life tables:

• DPR = Disability prevalence rate for age x from survey data
• Lx(hs) = (1 - DPR) * Lx [person years spent in health]
• Tx(hs) = x=t L [x(hs) + t] [total person years lived in health]
• ex(hs) = Tx(hs) / lx [healthy life expectancy]
• Note: hs=healthy state

## REVES: Réseau Espérance de Vie en Santé

• International Research Network on Health Expectancy
• First meeting in Quebec in 1989
• Concern over the effects of increased life expectancy on population health
• Goals are to collect, standardize, and improve national estimates of HLE

## REVES research on developing countries

• First estimates of HLE for developing countries were presented at the 3rd REVES meeting in 1991:
• China (Grab, Dowd, and Michel),
• Taiwan (Tu and Chen), and
• Burma, Indonesia, Sri Lanka, and Thailand, (Lamb and Andrews)
• Additional countries (e.g., Latin America) have been studied since that time

## HLE estimates in Asia (year of study):

• Burma (1989)
• China (1987, 1992, 1998-2000)
• Indonesia (1989)
• S. Korea (1984, 1989)
• N. Korea (1989)
• Malaysia (1984)
• Philippines (1984)
• Singapore (1995)
• Sri Lanka (1989)
• Taiwan (1986, 1991)
• Thailand (1986, 1989, 1995, 1996)
• Japan (1966, 1970, 1974-85, 1987, 1990, 1995)
• What are the trends in life expectancy and healthy life expectancy in the developing countries in Asia?

## Life Expectancy (LE) and Healthy Life Expectancy (HLE), China, 1987

• Females are advantaged with more years of life and more years of healthy life.
• Grab et al., 1991

## Similar trends in other Asian countries:

• Life Expectancy @ 65
• Healthy Life Expectancy @ 65
• Males
• Males
• Females

## Percent of life to be spent in health @ 65, (HLE/LE) China, 1987

• Males have the advantage with a greater percent of healthy life years.
• Grab et al., 1991
• Males
• Females
• Percent of Healthy Life @ 65 in selected Asian countries:
• Taiwan,1986
• Burma, 1989
• China,1992
• Taiwan,1991
• China,1987
• Malaysia,1984
• S. Korea,1984
• Indonesia,1989
• N.Korea,1989
• Sri Lanka,1989
• Thailand,1989
• Thailand,1986 [SRH]
• Thailand,1995 [SRH]
• Thailand,1996
• Singapore,1995

## Trends in LE @ 65 for selected countries:

• Males
• Females
• Taiwan
• 1986;1991
• China
• 1987;1992
• Thailand
• 1986;1989;1996

## Trends in HLE @ 65 for selected countries:

• Males
• Females
• Thailand [SRH]
• 1986;1995
• Taiwan
• 1986;1991
• China
• 1987;1992
• Thailand
• 1989;1996

## Trends in % HLE for selected countries:

• Thailand [SRH]
• 1986;1995
• *Little change*
• Taiwan
• 1986;1991
• China
• 1987;1992
• Thailand
• 1989;1996
• *Little change*

## Issues in measuring/studying HLE:

• Accurate estimates of population health and disability via national health surveys:
• representative samples
• consistent measures of “health”
• Valid life tables to estimate trends in mortality:
• source of life table data
• year of life table estimates VS. the year the health data are collected

## Why study Healthy Life Expectancy?

• Population aging and increased LE
• Compare health of older persons in countries at different levels of development