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 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