Skinner, J. Causes and consequences of regional variations in health care. Handbook of Health Economics, Volume 2. 2012. ISSN 1574-0064.
https://www.dartmouth.edu/~jskinner/documents/Skinner_CausesandConsequences.pdf (last accessed 11/09/2015)
“… consider regional health care differences in the context of a simple demand and supply model, and then focus on the empirical evidence documenting causes of variations. While demand factors are important … there remains strong evidence for supply-driven differences in utilization. I then consider evidence on the causal impact of spending on outcomes, and conclude that it is less important how much money is spent, and far more important how the money is spent” (page 45)
“The regional variations literature reviewed typically appears in the health services research literature and is not always visible to the practicing health economist.” (page 85)
“existing regional variations in health care utilization are symptomatic of an enormous lack of knowledge about what works and what does not in health care.” (page 86)