Table 1 Patient and tumor characteristics
From: Is the use of preoperative breast MRI predictive of mastectomy?
| MRI (n = 628) | No MRI (n = 817) | P-value | |
|---|---|---|---|
| Age, years | |||
| Mean | 53 | 60 | <0.001 |
| <50 | 43% | 26% | <0.001 |
| >50 | 56% | 73% | <0.001 |
| Ethnicity | |||
| Asian | 3% | 2% | NS |
| Black | 8% | 12% | NS |
| Hispanic | 6% | 4% | NS |
| White | 78% | 79% | NS |
| Other/unknown | 5% | 3% | NS |
| Stage | |||
| 0 | 23% | 27% | 0.08 |
| 1 | 39% | 39% | NS |
| 2 | 29% | 22% | NS |
| 3 | 7% | 8% | NS |
| 4 | 2% | 3% | NS |
| Tumor size (cm) | 1.6 | 1.5 | NS |
| Histology | |||
| DCIS | 24% | 26% | NS |
| Infiltrating ductal | 59% | 53% | NS |
| Infiltrating lobular | 12% | 11% | NS |
| Other | 5% | 10% | NS |