Anticoagulation
| Median | Min | Max | |
| Visits per patient per year since surgery | 14.3 | 3.8 | 26.2 |
| Number of time, per patient, INR was checked or documented during visited | 24 | 2 | 77 |
| Percentage of visits, per patient, when International Normalized Ratio was <2.0 | 16% | 0% | 58% |
| Median warfarin dose | 5.75 | 2.5 | 10 |
| Percentage of visits, per patient, when warfarin dose changed | 35% | 3% | 83% |