Exhibit 2.

Summary of County-level Data from 2004 to 2007 among All U.S. Counties with Medicare Advantage Plans Available

Year	Number of MA Plans Available	Average Expected Monthly Out-of-Pocket Costs for MA Enrollees ($)
2004 (1567 counties) Mean (min, max)	2.5 (1,30)	431 (0,529)
2005 (2778 counties) Mean (min, max)	3.7 (1,44)	459 (192,615)
Mean within-county change since 2004 (min, max)	2.4 (−1,21)	11 (−229,424)
2006 (3103 counties) Mean (min, max)	9.8 (1,59)	380 (208,518)
Mean within-county change since 2005 (min, max)	6.6 (−1,28)	−79 (−200,86)
2007 (3113 counties) Mean (min, max)	20.0 (4,77)	327 (184,417)
Mean within-county change since 2006 (min, max)	10.3 (−12,34)	−53 (−164,99)

Source: Authors’ analysis of data from the Medicare Options Compare database.

Notes: For this summary table, expected out-of-pocket cost estimates were averaged across health status and age categories based on the distributions of health status and age among study participants to yield summary weighted averages for each county (see Technical Appendix A for details on out-of-pocket cost estimates and 2006 imputations). Within-county changes in consecutive years were calculated among counties with at least 1 Medicare Advantage plan available in both years. Mean values presented in the table are the averages across all counties. Minima and maxima are provided from the counties with the lowest and highest values, respectively, to convey the range across counties in the number of plans available, benefit generosity, and year-to-year changes. Dollar estimates for years 2004–2006 have been inflated to constant 2007 dollars with use of the GDP deflator.