Table 1 Patient characteristics involved in the study
Features | N = 365(%) |
|---|---|
Gender | |
Male | 231 (63.3) |
Female | 134 (36.7) |
Age | |
≤ 60 years | 205 (56.2) |
> 60 years | 160 (43.8) |
Smoking | |
None | 224 (61.3) |
No more than 20 years and 20/day | 40 (11.0) |
Above 20 years or 20/day | 101 (27.7) |
Alcohol | |
None | 300 (82.2) |
No more than 20 years and 250 g/day | 39 (10.7) |
Above 20 years or above 250g/d | 26 (7.1) |
Lymph node level | |
II/III | 226 (61.9) |
IV | 139 (38.1) |
Pathological type | |
Squamous cell carcinoma | 192 (52.6) |
Adenocarcinoma | 118 (32.3) |
Other types | 55 (15.1) |
Pathological grade | |
Highly differentiated | 204 (55.9) |
Moderately differentiated | 9 (2.5) |
Poorly differentiated | 152 (41.6) |
Involved nodal stage | |
N1 | 38 (10.4) |
N2a | 22 (6.0) |
N2b | 185 (50.7) |
N2c | 110 (30.1) |
N3 | 10 (2.7) |
Initial treatment | |
No treatment | 54 (14.8) |
Chemotherapy | 91 (24.9) |
Surgery | 192 (52.6) |
Radiotherapy | 28 (7.7) |