A reduction in per-capita Medicare hospital admission rates between 2009 and 2014 may be the key driver of a two-percentage point reduction in Medicare 30-day readmission rates, rather than the effectiveness of the Medicare Hospital Readmissions Reduction Program (HRRP). The findings were reported in “Did Hospital Readmissions Fall Because Per Capita Admission Rates Fell?” by J. Michael McWilliams, Michael L. Barnett, Eric T. Roberts, et. al. From 2009 to 2014, Medicare hospital readmission rates declined from 17.5% to 15.5%. During this period, per capita hospital admission rates among fee-for-service beneficiaries declined by 12 . . .