| Characteristic | HR | P Value |
Age | Continuous, per year | 0.977 | <0.0001 |
Family History | Yes vs No | 1.28 | 0.03 |
Presentation | Clinical vs Radiologic | 1.40 | 0.03 |
Nuclear Grade | High vs Non-high | 1.03 | 0.8 |
Necrosis | Present vs Absent | 1.43 | 0.01 |
No. of Excisions | ≥3 vs ≤2 | 1.56 | 0.03 |
Margin Status | Negative vs Positive/Close | 0.72 | 0.02 |
Radiation | Yes vs No | 0.40 | <0.0001 |
Endocrine Treatment | Yes vs No | 0.52 | 0.0002 |
Time Period | 1999-2010 vs 1978-1998 | 0.74 | 0.02 |