Table 3. Characteristics of tumors and adjuvant therapy.
| Characteristics | ≤2 W, n=227 (%) | ≤3 W, n=56 (%) | >3 W, n=65 (%) | P |
|---|---|---|---|---|
| T stage (1/2/3/4) | 14/86/107/20 | 3/17/28/8 | 3/19/29/14 | 0.175 |
| Vessel invasion | 80 (35.2) | 21 (37.5) | 22 (33.8) | 0.915 |
| Nerve invasion | 23 (10.1) | 7 (12.5) | 11 (16.9) | 0.321 |
| Lymph node status (N+) | 104 (45.8) | 22 (39.3) | 27 (41.5) | 0.616 |
| Nodal yield | 30±11 | 30±10 | 31±12 | 0.795 |
| Chemotherapy | 86 (37.9) | 21 (37.5) | 19 (29.2) | 0.530 |
| Radiotherapy | 19 (8.4) | 8 (14.3) | 4 (6.2) | 0.261 |
| Chemoradiotherapy | 39 (17.2) | 9 (16.1) | 3 (10.8) | 0.457 |
| Preventive adjuvant therapy | 121 (53.3) | 27 (48.2) | 19 (29.2) | 0.003 |
| Salvage therapy | 68/115 (59.1) | 13/34 (38.2) | 7/34 (20.6) | <0.001 |
| 5-year overall survival | (43.0) | (36.0) | (29.0) | 0.006 |
| 5-year disease-free survival | (23.0) | (21.0) | (19.0) | 0.238 |
W, weeks.