Table 1.
Demographics and clinical characteristics of patients in this study
| Characteristics |
IHC ( −) N (%)/mean ± sd |
IHC (1 +) N (%)/mean ± sd |
IHC (2 +) N (%)/mean ± sd |
IHC (3 +) N (%)/mean ± sd |
|---|---|---|---|---|
| Age (year) | 60.35 ± 11.89 | 60.51 ± 11.61 | 60.24 ± 11.72 | 58.29 ± 10.39 |
| Sex | ||||
|
Male Female |
1480 (60) 945 (40) |
599 (65) 323 (35) |
318 (65.7) 166 (34.3) |
43 (54.4) 36 (45.6) |
| T stage | ||||
|
T1 T2 T3 T4 |
133 (5.5) 347 (14.3) 1566 (64.6) 379 (15.6) |
34 (3.7) 128 (13.9) 631 (68.4) 129 (14) |
22 (4.5) 67 (13.8) 335 (69.2) 60 (12.4) |
7 (8.9) 9 (11.4) 52 (65.8) 11 (13.9) |
| N stage | ||||
|
N0 N1 N2 |
1318 (54.4) 670 (27.6) 437 (18) |
524 (56.8) 254 (27.6) 144 (15.6) |
267 (55.2) 139 (28.7) 78 (16.1) |
36 (45.6) 27 (34.2) 16 (20.3) |
| Distant metastasis | ||||
|
Yes No |
2084 (85.9) 341 (14.1) |
765 (83) 157 (17) |
390 (80.6) 94 (19.4) |
69 (87.3) 10 (12.7) |
| TNM stage | ||||
|
I II III IV |
360 (14.9) 856 (35.3) 869 (35.8) 340 (14) |
127 (13.8) 351 (38.1) 289 (31.3) 155 (16.8) |
61 (12.6) 181 (37.4) 148 (30.6) 94 (19.4) |
10 (12.7) 23 (29.1) 36 (45.6) 10 (12.7) |
| Vessel invasion | ||||
|
Yes No |
1489 (61.4) 936 (38.6) |
595 (64.5) 327 (35.5) |
310 (64) 174 (36) |
37 (46.8) 42 (53.2) |
| Perineural invasion | ||||
|
Yes No |
1616 (66.6) 809 (33.4) |
615 (66.7) 307 (33.3) |
305 (63) 179 (37) |
47 (59.5) 32 (40.5) |
| Tumor differentiation | ||||
|
High Poor-moderate |
2293 (94.6) 132 (5.4) |
877 (95.1) 45 (4.9) |
455 (94) 29 (6) |
76 (96.2) 3 (3.8) |
| Total | 2425 (62) | 922 (23.6) | 484 (12.4) | 79 (2) |