Table 1.
Patient and tumor characteristics
| 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 |
Abbreviations: DCIS ductal carcinoma in situ, MRI magnetic resonance imaging, NS non-significant.