EXHIBIT 1.
Mean Hospital Performance Scores On Measures Of Quality, CMS/Premier Hospital Quality Initiative Demonstration (HQID) Segment For Hip And Knee Replacement
| Mean hospital score (SD) | |||
|---|---|---|---|
| Top 20 percent | Remaining hospitals | p value | |
| Proportion of patients who received prophylactic antibiotics within 1 hour before surgical incision |
90% (5.79) | 83% (10.56) | <0.0001 |
| Proportion of patients who had appropriate prophylactic antibiotic selection for surgical patients |
99% (2.16) | 97% (3.43) | <0.030 |
| Proportion of patients whose prophylactic antibiotics were discontinued within 24 hours after surgery end time |
85% (9.22) | 73% (14.96) | <0.030 |
| Metabolic derangement avoidance indexa | 1.00 (0.000138) | 1.00 (0.000161) | 0.913 |
| Hematoma avoidance indexa | 1.00 (0.000037) | 1.00 (0.0000358) | 0.864 |
| Readmission (30-day) avoidance indexa | 1.00 (0.0333) | 1.00 (0.0272) | 0.488 |
| Composite quality score | 0.9570 (0.0169) | 0.8466 (0.0984) | <0.0001 |
SOURCE: Authors’ analysis; see methods section in text.
NOTES: CMS is Centers fo Medicare and Medicaid Services. SD is standard deviation.
a
Top 50 percent performing hospitals only.