TABLE 1.
Procedure Specific Standard Deviation From Mean Mortality Stratified by Cluster
| Operation | Low-Performing Hospitals | Average-Performing Hospitals | High-Performing Hospitals |
|---|---|---|---|
| Appendectomy | 0.677 | 0.061 | −0.873 |
| Cholecystectomy | 0.664 | −0.001 | −0.799 |
| Colectomy | 0.832 | −0.480 | −0.551 |
| Inguinal hernia repair | 0.660 | 0.105 | −0.895 |
| Adhesiolysis | 0.887 | −0.204 | −0.877 |
| Repair of perforated viscus | 0.483 | 0.050 | −0.630 |
| Small-bowel resection | 0.958 | −0.534 | −0.653 |
| Ventral hernia repair | 0.691 | 0.167 | −0.990 |
| Within class variance | 5.752 | 3.759 | 3.860 |