30-day readmission rate of 14% that was reported in the only other comparable study on elderly Medicare beneficiaries with diabetes (5% Medicare sample from the CCW), which used FFS claims data from 2005.12 Although not specific to elderly patients with diabetes, one study that included patients enrolled in Medicare Advantage plans estimated the all-cause 30-day readmission rate as 14.5%. This study also reported readmission rates that were 13%–20% lower in Medicare Advantage plans than in Medicare’s traditional FFS program.24 Based on these published reports, one can speculate that, even with T2DM, the readmission rates reported therein are lower than those previously observed in the elderly, perhaps because of the coordinated and managed care that is typical of Medicare Advantage plans. The findings of this study emphasize the role of patient complexities specific to the elderly (as identified by the AGS