Table 1.
Demographic and clinicopathological features of patients receiving adjuvant chemotherapy and adjuvant chemoradiotherapy.
| Variable | Adjuvant Chemotherapy (n = 5,454) | Adjuvant Chemoradiotherapy (n = 4,643) | P Value |
|---|---|---|---|
| Age | <0.001 | ||
| 40–59 | 1,378 (25.3%) | 1,442 (31%) | |
| 60–79 | 3,637 (66.7%) | 2,989 (64.4%) | |
| >80 | 439 (8%) | 212 (4.6%) | |
| Sex | 0.007 | ||
| Female | 2,738 (50.2%) | 2,206 (47.5%) | |
| Male | 2,716 (49.8%) | 2,437 (52.5%) | |
| Race | 0.162 | ||
| White | 4,520 (82.9%) | 3,817 (82.2%) | |
| Black | 503 (9.2%) | 478 (10.3%) | |
| Other | 431 (7.9%) | 348 (7.5%) | |
| Primary Site | 0.015 | ||
| Head | 3,952 (72.5%) | 3,476 (74.9%) | |
| Body/tail | 1,009 (18.5%) | 763 (16.4%) | |
| Other | 493 (9%) | 404 (8.7%) | |
| Grade | <0.001 | ||
| 1 | 541 (10%) | 432 (9.3%) | |
| 2 | 2,522 (46.2%) | 2,350 (50.6%) | |
| 3 | 1,910 (35%) | 1,552 (33.4%) | |
| 4 | 65 (1.2%) | 42 (0.9%) | |
| Unknown | 416 (7.6%) | 267 (5.8%) | |
| Tumor Size | 0.018 | ||
| ≤2 cm | 929 (17%) | 697 (15%) | |
| 2–4 cm | 3,156 (57.9%) | 2,726 (58.7%) | |
| >4 cm | 1,369 (25.1%) | 1,220 (26.3%) | |
| Stage | <0.001 | ||
| I | 610 (11.2%) | 364 (7.8%) | |
| II | 4,612 (84.6%) | 4,061 (87.5%) | |
| III | 232 (4.2%) | 218 (4.7%) | |
| T | <0.001 | ||
| T1 | 344 (6.3%) | 179 (3.9%) | |
| T2 | 670 (12.3%) | 564 (12.1%) | |
| T3 | 4,208 (77.2%) | 3,682 (79.3%) | |
| T4 | 232 (4.2%) | 218 (4.7%) | |
| Nodal status | <0.001 | ||
| N0 | 1,877 (34.4%) | 1,402 (30.2%) | |
| N1 | 3,577 (65.6%) | 3,241 (69.8%) |
CRT, chemoradiotherapy.