Demonstrating the impact of national GDP and life expectancy.

This work was completed as part of a project in my Data Scientist course. The conclusions are pretty light, but the purpose was to show some analysis and graphics of an open database.

 

There is a clear correlation between GDP levels and life expectancy. Clearly there is a complex system underlying the correlation which would involve factors including money invested in the health system, affordability of medicines and treatment and basic levels of education about health matters.

The charts below show, for a number of countries, the movement of GDP over time and the movement of life expectancy.

The first chart shows 6 countries where the trend is clear.

GDP vs Life Expectancy (includingZimbabwe)
GDP vs Life Expectancy

Another way of looking at this is to show them all on the same chart

GDP vs life expectancy all on the same vchart
GDP vs life expectancy all on the same vchart

Looking at Zimbabwe alone, we can see the great leaps in life expectancy for relatively small increments in GDP

Zimbabwe only
Zimbabwe only

 

If we remove Zimbabwe which has such a low GDP, it makes the impact for other countries difficult to see. The picture is even clearer:

GDP vs Life Expectancy excl Zimbabwe
GDP vs Life Expectancy excl Zimbabwe

Finally let us look at China which seems to reval waht the other plots are hinting at: we can improve life expectancy with improved GDP.  If we start at a low base, then expectancy initially increases rapidly, however over time this impact flattens out.

GDP vs life expectancy China only
GDP vs life expectancy China only

Although does Germany tell another story?

Germany GDP vs expectancy
Germany GDP vs expectancy

So we will end with a conclusion that life expectancy does increase with GDP and initially at low GDP rates the change is pronounced.

However, it might be that in certain places, the curve of improvement against GDP increase begins to flatten at at higher levels .

However, that change is probably dependent on other factors as well and so not all countries have the same curves.