Japan's health systems are the best among the 191 member countries of the World Health Organization, according to a WHO survey in the World Health Report 2000, released Wednesday.

The findings in the report, "Health Systems: Improving Performance," showed that Japan topped the list of overall health system attainment based on five indicators.

The five indicators include healthy life expectancy, a figure in which the expected number of years of a person's ill health are subtracted from overall life expectancy, and health inequalities, examining regional disparities in mortality rates among children under 5.