Table 1 Tumor characteristics in different ethnic groups: data from the Prospective study of Outcomes in Sporadic versus Hereditary breast cancer [50]
Tumor characteristic | Alla, n = 2956 | White, n = 2690 | Black, n = 118 | Asian, n = 87 | Â |
|---|---|---|---|---|---|
Tumor diameter median | 22.0 | 22.0 | 26.00 | 26.00 | W vs. B p=0.01 |
Multifocal distribution | 29.9% | 24.64% | 38.55% | 32.69% | W vs. B p = 0.004 |
Nodal stage | |||||
 N0 | 48.9% | 49.2% | 43.9% | 48.2% | p = NS |
 N1 | 51.2% | 50.8% | 56.1% | 51.8% | |
Distant metastases | 2.5% | 2.4% | 5.1% | 3.5% | p = NS |
Grade | |||||
 1 | 5.7% | 5.6% | 0.9% | 11.8% | W vs. B p = 0.055 W vs. A p = 0.045 B vs. A p = 0.004 |
 2 | 33.8% | 34.0% | 30.0% | 28.2% | |
 3 | 60.6% | 60.4% | 68.1% | 60.0% | |
 Missing | 2.7% | 2.5% | 4.2% | 2.3% | |
ER positiveb | 66.1% | 66.5% | 62.4% | 57.5% | NS |
ER negative | 33.9% | 33.5% | 37.6% | 42.5% | |
Missing | 0.4% | 0.4% | 0.9% | 0.0% | |
HER2 positiveb | 28.1% | 28.3% | 20.2% | 29.7% | NS |
HER2 negative | 72.0% | 71.7% | 79.8% | 70.3% | |
Missing | 13.5% | 13.7% | 7.6% | 14.9% | |
TNTc | 19.0% | 18.6% | 26.1% | 23.2% | W vs. B = 0.043 |
Missing | 4.2% | 4.2% | 2.5% | 5.8% | |