Besides my previously mentioned objections with simplistic comparisons between healthcare systems, vis-a-vis naive economic comparisons and the effect of taxation on behaviors, it is very difficult to compare the actual performance of healthcare systems, in both financial and human terms (e.g., life expectancy, mortality rates, etc), without accounting for other differences in the populations (e.g., genetics, health/risk behaviors, lifestyle, etc). These simplistic comparisons of national health care systems based on crude mortality rates and the like are very much like comparing performance of goalies in various sports based on who wins the game alone, i.e., without making any real attempt to control for the performance of the rest of the teams’ defense, the performance of the offense, and so on, when what we really want to know, at bare minimum, is the number of saves as compared the number of shots on goal (and even then that’s an imperfect metric). Of course some goalies are likely to be somewhat more effective than others and, other things equal, goalies can have a pronounced impact on the outcomes, but you cannot simply assume that there are not any significant systematic differences between teams in general or on game day.
These are just a few relevant differences I can think of off the top of my head:
- The United States population is not a mirror image of Europe: genetically, culturally, or otherwise
- Much higher smoking rates historically
- Relatively high rates of obesity (although other countries are starting to catch up to us now)
- Much higher homicide rate.
- Higher rates of sexually transmitted diseases (see the AIDS crisis)
- More geographically distributed than most (as in, lower population density, significant populations living in rural locations, etc)
- Higher rates of serious automobile accidents per capita
….. (and probably more I’m forgetting)



