APPENDIX EXHIBIT A8.
Association between ACO participation (2012, 2013, or 2014) and Physician Group Size
| (1) | |
|---|---|
| VARIABLES | TIN Size |
| ACOparticipant | 61.31** |
| (19.77) | |
| Post | 7.93*** |
| (1.62) | |
| ACOparticipant*Post | 11.40** |
| (3.65) | |
| Observations | 569,955 |
| R-squared | 0.43 |
| MSA FE | Yes |
| F Statistic | 25.00 |
Robust standard errors in parentheses
***
p<0.001,
**
p<0.01,
*
p<0.05
SOURCE Authors’ analysis of data from the Centers for Medicare and Medicaid.
NOTES Within-market analyses clustered standard errors at the MSA-level. ACO is Accountable Care Organization. TIN is Tax Identification Number. MSA is Metropolitan Statistical Area.