Table II. Demographic and clinical data: SEER database, cases entered 1988–2004.
| Full study cohort 4048 patients | Pathologically confirmed LN 1298 patients | |
|---|---|---|
| Age | 71±13 | 68±13 |
| Female | 2990 (73.8%) | 952 (73.3%) |
| Caucasian | 3282 (81.1%) | 1,049 (80.8%) |
| Hispanic | 686 (17.0%) | 206 (15.9%) |
| Radiation | 726 (17.9%) | 338 (26.0%) |
| Grade I | 561 (13.9%) | 160 (12.3%) |
| Grade II | 1546 (38.2%) | 496 (38.2%) |
| Grade III | 1508 (37.3%) | 517 (39.8%) |
| Grade IV | 58 (1.4%) | 29 (2.2%) |
| T1 | 907 (22.4%) | 248 (19.1%) |
| T2 | 809 (20.0%) | 297 (22.9%) |
| T3 | 1339 (33.1%) | 477 (36.7%) |
| T4 | 233 (5.8%) | 79 (6.1%) |
| Lymph node involvement | 737 (18.2%) | 737 (56.8%) |
| Metastatic | 845 (20.9%) | 231 (17.8%) |