http://content.healthaffairs.org/cgi/reprint/20/3/21.pdf

The authors compare results of a single survey question on satisfaction with "the way health care runs" in seventeen countries with the World Health Organization's (WHO's) systematic effort to measure levels of responsiveness, overall health system goal achievement, and the efficiency of health system resource use in 191 countries. The comparison, we believe, is useful because it highlights some fundamental limitations. Unfortunately, in the course of their analysis, the authors misrepresent the WHO approach to measuring health system performance and make a number of incorrect claims.