Table 2 Demographic and clinicopathologic characteristics for stages 1-3 first primary invasive breast cancer, 2000-2006.
| Â | n | % |
|---|---|---|
Node Status | Â | Â |
   Node Negative | 42,859 | 63.3% |
   1-3 Nodes Positive | 16,648 | 24.6% |
   >3 Nodes Positive | 8,191 | 12.1% |
Stage | Â | Â |
   I | 31,721 | 46.9% |
   II | 28,952 | 42.8% |
   III | 7,025 | 10.4% |
Grade | Â | Â |
   Well differentiated; Grade I | 14,813 | 21.9% |
   Moderately differentiated; Grade II | 28,406 | 42.0% |
   Poorly differentiated; Grade III | 23,191 | 34.3% |
   Undifferentiated; anaplastic; Grade IV | 1,288 | 1.9% |
ER/PR/HER2 Status | Â | Â |
   +/+/+ | 7,343 | 10.8% |
   +/+/- | 36,906 | 54.5% |
   +/-/+ | 2,258 | 3.3% |
   +/-/- | 6,305 | 9.3% |
   -/+/+ | 319 | 0.5% |
   -/-/+ | 4,805 | 7.1% |
   -/+/- | 652 | 1.0% |
   -/-/- | 9,110 | 13.5% |
Tumor Size | Â | Â |
   ≤2 cm | 42,043 | 62.1% |
   > 2 cm | 25,655 | 37.9% |
Race/Ethnicity | Â | Â |
   Non-Hispanic White | 47,016 | 69.4% |
   Non-Hispanic Black | 3,606 | 5.3% |
   Hispanic | 10,134 | 15.0% |
   Asian/Pacific Islander | 6,942 | 10.3% |
Age | Â | Â |
   ≤45 | 11,755 | 17.4% |
   46-69 | 40,058 | 59.2% |
   ≥70 | 15,885 | 23.5% |
Total | 67,698 | Â |