Table 5. Patient characteristics.
| Characteristic | No. of patients (%) |
|---|---|
| Patients | 134 (100.0) |
| Median age = 63 years (range 31-81) | |
| Gender | |
| Male | 90 (67.2) |
| Female | 44 (32.8) |
| Pathologic type | |
| Squamous carcinoma | 56 (41.8) |
| Adenocarcinoma | 65 (48.5) |
| Adenosquamous carcinoma | 7 (5.2) |
| Large cell carcinoma | 6 (4.5) |
| Pathologic differentiation | |
| High | 10 (7.5) |
| Median | 91 (67.9) |
| Low | 33 (24.6) |
| Clinical Stage* | |
| I | 34 (25.4) |
| II | 26 (19.4) |
| IIIA | 74 (55.2) |
| Vascular invasion | |
| Negative | 120 (89.6) |
| Positive | 14 (10.4) |
| Treatment modality-Curative resection | |
| Yes | 134 (100.0) |
| No | 0 (0) |
| Treatment modality-Adjuvant chemotherapy | |
| Yes | 112 (83.6) |
| No | 22 (16.4) |
| Treatment modality-Postoperative radiotherapy | |
| Yes | 25 (18.7) |
| No | 109 (81.3) |
*
According to UICC/AJCC (6th edition) stage system