Table I.
Patient demographics and tumor characteristics
| Characteristics | Number | % |
|---|---|---|
| Age | ||
| 20–29 years | 797 | 0.7 |
| 30–39 years | 8092 | 7.2 |
| 40–49 years | 24,105 | 21.5 |
| 50–59 years | 26,842 | 23.9 |
| 60–69 years | 22,294 | 19.8 |
| 70–79 years | 19,038 | 17.0 |
| 80+ years | 11,180 | 10.0 |
| Race/ethnicity | ||
| White | 80,325 | 71.8 |
| Black | 10,120 | 9.1 |
| American Indian / Alaska Native | 401 | 0.4 |
| Asian or Pacific Islander | 9981 | 8.9 |
| Hispanic | ||
| Geographic Region | ||
| East | 34,411 | 30.6 |
| Northern Plains | 14,539 | 12.9 |
| Pacific Coast | 57,626 | 51.3 |
| Southwest | 5772 | 5.1 |
| Regional lymph nodes # positive | ||
| 0 | 57,483 | 51.2 |
| 1–4 | 34,585 | 30.8 |
| 5–10 | 10,790 | 9.6 |
| >10 | 9490 | 8.4 |
| Grade | ||
| 1 | 16,082 | 15.3 |
| 2 | 42,738 | 40.5 |
| 3 | 44,656 | 42.4 |
| 4 | 1943 | 1.8 |
| Stage | ||
| I | 37,796 | 34.8 |
| II | 54,140 | 49.9 |
| III | 16,643 | 15.3 |
| ER | ||
| Positive | 84,008 | 74.8 |
| Negative | 28,340 | 25.2 |
| PR | ||
| Positive | 69,251 | 63.1 |
| Negative | 40,557 | 36.9 |
| Radiation | ||
| Yes | 25,823 | 23.0 |
| No | 86,513 | 77.0 |