Healthcare expenditure -v- life expectancy

A smart way to reduce the risk of confusing correlation with causation, especially when comparing different countries, is to plot the two variables of interest over time.

Here’s a nice example, showing that it’s likely the US has a less efficient healthcare system than other rich countries, and that the low life expectancy is not due to other confounding variables (e.g., having a higher homicide rate – something which has actually decreased over the time period shown).

More here by Lane Kenworthy

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2 Responses to Healthcare expenditure -v- life expectancy

  1. James Hatt says:

    That is interesting.

  2. Pingback: Hospital treatment cost -v- mortality rate « Marc Gawley

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