Table 3.
Estimated Gross Savings by MSSP Entry Cohort and Performance Year
| Estimated Gross Savings (Adjusted Differential Change in Spending From Pre‐entry Period to Performance Year for ACOs vs. Control Group), b $/Patient (95% CI) | ||||||
|---|---|---|---|---|---|---|
| Entry Cohort | Unadjusted Pre‐entry Sample Mean, a $/Patient | Adjusted Pre‐entry Difference in Annual Spending Level Between ACOs and Control Group, $/Patient (95% CI) | Adjusted Pre‐entry Difference in Annual Spending Trend Between ACOs and Control Group, $/Patient (95% CI) | 2013 | 2014 | 2015 |
| 2012 (n = 114 ACOs) | 9,649 | 139 (−79, 357) | −3 (−58, 53) | −129 (−261, 2) | −291 (−425, −157) | −302 (−437, −166) |
| 2013 (n = 106 ACOs) | 9,649 | 31 (−84, 146) | −5 (−39, 29) | −15 (−112, 82) | −114 (−214, −14) | −139 (−243, −35) |
| 2014 (n = 115 ACOs) | 9,649 | 33 (−90, 155) | 8 (−18, 34) | — | −72 (−150, 7) | −36 (−122, 50) |
Abbreviations: ACO, accountable care organization; CI, confidence interval; MSSP, Medicare Shared Savings Program.
a
In the analyses, the pre‐entry period differed for each entry cohort, but for the purpose of describing the study sample in this table, years 2009–2011 were used to calculate a single mean for each characteristic.
b
A negative differential change in spending indicates savings.