Table 1.
Characteristics of patients and tumors used for this study
| Factor | Category | Number | Percentage |
| Tumor size (cm) | ≤ 1 | 13 | 21.7 |
| > 1, ≤ 4 | 23 | 38.3 | |
| > 4 | 11 | 18.3 | |
| Unknown | 13 | 21.7 | |
| Tumor grade | I | 14 | 23.3 |
| II | 23 | 38.3 | |
| III | 16 | 26.7 | |
| Unknown | 7 | 11.7 | |
| ER | Negative | 19 | 31.7 |
| Positive | 37 | 61.7 | |
| Unknown | 4 | 6.7 | |
| PR | Negative | 36 | 60.0 |
| Positive | 21 | 35.0 | |
| Unknown | 3 | 5.0 | |
| Her-2/neu | Negative | 31 | 51.7 |
| Positive | 21 | 35.0 | |
| Unknown | 8 | 13.3 | |
| P53 | Negative | 41 | 68.3 |
| Positive | 15 | 25.0 | |
| Unknown | 4 | 6.7 | |
| Race | African American | 15 | 25.0 |
| Caucasian | 44 | 73.3 | |
| Others | 1 | 1.7 | |
| Age | Minimum | 40 | |
| Maximum | 79 | ||
| Average | 59 | ||
| Median | 58.5 |