The Implications of Regional Variations in Medicare Spending. Part 1: The Content, Quality, and Accessibility of Care

Figure 6. Arrows show the direction of any statistically significant association ( ≤ 0.05) between the percentage of patients
receiving a specified service and regional End-of-Life Expenditure Index differences. An arrow pointing upward indicates that
as spending increases across regions, the percentage of patients receiving a specified service increases. A value greater
than 0.05 was considered not significant.
Percentage of patients in the acute myocardial infarction cohort who received the specified therapy (among ideal candidates),
according to type of hospital and quintile of Medicare spending.PP
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Ann Intern Med
February 18, 2003
vol. 138
no. 4
273-287