Table 6 Historical control/set comparison of re-excision procedures
From: The impact of use of an intraoperative margin assessment device on re-excision rates
Total | Per Surgeon | |||||
|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | |||
MarginProbe Procedures | Lumpectomy procedures | 165 | 39 | 42 | 39 | 45 |
Re-excision procedures | 16 | 3 | 7 | 4 | 2 | |
Re-excision rate | 9.7% | 8% | 17% | 10% | 4% | |
Historical | Lumpectomy procedures | 186 | 51 | 48 | 46 | 41 |
Re-excision procedures | 48 | 8 | 21 | 14 | 5 | |
Re-excision rate | 25.8% | 16% | 44% | 30% | 12% | |
Reduction | Absolute Reduction (% points) | 16.1% | 8.0% | 23.8% | 20.2% | 7.8% |
Relative reduction | 62% | 51% | 62% | 66% | 64% | |
P-value | <0.0001 | |||||