Health and economic performance are interrelated. Infant mortality, child mortality, and life expectancy all correlate with rising income. In four random countries in which the average annual income ranged, in 1990, from $660, to $1,727, to $3,795, to $11,422, infant mortality ranged from 114, to 66, to 34, to 9 (per thousand). As income doubles, infant survival tends to rise proportionately, a trend reflected in other measures of health and of wealth.
Health and economic performance are interrelated. Infant mortality, child mortality, and life expectancy all correlate with rising income. In four random countries in which the average annual income ranged, in 1990, from $660, to $1,727, to $3,795, to $11,422, infant mortality ranged from 114, to 66, to 34, to 9 (per thousand). As income doubles, infant survival tends to rise proportionately, a trend reflected in other measures of health and of wealth.