Table. Coded Risk and Readmissions Rates After the Hospital Readmission Reduction Program.
| Characteristic | Control Hospitals (n = 1115) | HRRP-Exposed Hospitals (n = 3259) | Difference-in-Differences Estimate, % (95% CI) | ||
|---|---|---|---|---|---|
| Pre-HRRP | Post-HRRP | Pre-HRRP | Post-HRRP | ||
| Outcome, No. (%) | |||||
| Acute myocardial infarction | 5919/127 200 (4.7) | 8882/208 589 (4.3) | 386 399/2 113 298 (18.3) | 740 908/3 853 302 (19.2) | NA |
| Chronic heart failure | 43 144/127 200 (33.9) | 68 331/208 589 (32.8) | 877 695/2 113 298 (41.5) | 1 588 481/3 853 302 (41.2) | NA |
| Pneumonia | 78 137/127 200 (61.4) | 131 376/208 589 (63.0) | 849 204/2 113 298 (40.2) | 1 523 913/3 853 302 (39.6) | NA |
| Comorbidity count per admission, meana | 2.50 | 2.99 | 2.50 | 3.47 | NA |
| Readmission rates, % | |||||
| Adjusted for admitting diagnosis, demographics, and season | 20.71 | 19.94 | 20.44 | 19.30 | −0.38 (−0.72 to −0.04) |
| Adjusted for admitting diagnosis, demographics, season, and coded severity | 21.97 | 20.60 | 21.24 | 18.83 | −1.03 (−1.39 to −0.68) |
Abbreviations: HRRP, Hospital Readmission Reduction Program; NA, not applicable.
a
As defined by Elixhauser et al.