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. Author manuscript; available in PMC: 2010 Dec 9.
Published in final edited form as: JAMA. 2009 Dec 9;302(22):2444–2450. doi: 10.1001/jama.2009.1810

Table 3.

National Costs and Quality Rates With Caseloads Necessary to Detect a 10% Relative Difference in Costs or Quality

Ambulatory Costs Mammography Hemoglobin A1c Testing Preventable Hospitalization Congestive Heart Failure 30-Day Hospital Readmission
National costs or rates $3055a 69.5b 63.5b 4.1b 8.3b
Caseload required to detect a 10% difference, No. 2526 328 438 19 069 8874
a

National mean ambulatory costs based on Medicare Part B expenditures of all patients from the 2005 Continuous Medicare History Sample.

b

National rates are shown as the percentage of eligible Medicare patients for each quality measure in the 2005 Part B 20% sample.