That's a good area to start, although 90% might be optimistic. See this paper: Pozen, Alexis and David M. Cutler. 2010. Medical spending differences in the Uni

That's a good area to start, although 90% might be optimistic. See this paper: Pozen, Alexis and David M. Cutler. 2010. Medical spending differences in the United States and Canada: The role of prices, procedures, and administrative expenses. Inquiry 47(2): 124-134. https://dash.harvard.edu/bitstream/handle/1/5343032/Medical%20Spending%20Differences%20in%20the%20U.S.%20and%20Canada.pdf?sequence=1 https://dash.harvard.edu/bitstream/handle/1/5343032/Medical%... Look at Table 1 and Table 2, page 19/20; the difference in cost due to salaries/income is $490 per capita, the difference in cost due to administrative overhead is $616 per capita.