Life expectancy has increased through all countries regardless of their income
A country's income
Positive correlation with life expectancy of its population
A country's income
Negative correlation with rates of mortality (infant, u5 and maternal) of its population
Low income countries have higher maternal mortality rates than high income countries due to inadequate access to trained health professionals during pregnancy
High income countries are mainly burdened by non-communicable diseases
Low income countries are often double burdened by infectious, maternal, prenatal and nutrition conditions
High income countries have a lower percentage of diseases in the 0-4, 5-14 and 15-59 age groups than low and middle income countries due to access to healthcare
High income counties have a higher percentage of diseases in the 60 and older age group because the life expectancy of low and middle income countries are lower so the population doesn't live that long