Table 1 Clinical characteristics
Characteristics | Patients (n = 70) |
|---|---|
Age (year) | |
≤ 60 | 35 (50.0) |
> 60 | 35 (50.0) |
Sex | |
Male | 62 (88.6) |
Female | 8 (11.4) |
Smoking history | |
Never | 29 (41.4) |
Former or current | 41 (58.6) |
Drinking history | |
Never | 27 (38.6) |
Former or current | 43 (61.4) |
Stage (AJCC, 8th edition) | |
IIa | 0 (0.0) |
IIb | 13 (18.6) |
IIIa | 7 (10.0) |
IIIb | 42 (60.0) |
IVa | 8 (11.4) |
T phase | |
T2 | 14 (20.0) |
T3 | 52 (74.3) |
T4a | 4 (5.7) |
N phase | |
N0 | 14 (20.0) |
N1 | 32 (45.7) |
N2 | 16 (22.9) |
N3 | 8 (11.4) |
Tumor location | |
Upper | 3 (4.3) |
Middle | 48 (68.6) |
Lower | 19 (27.1) |
Multiple | 0 (0.0) |
Lymphadenectomy | |
Two-field | 49 (70.0) |
Three-field | 17 (24.3) |
Unknown | 4 (5.7) |