Table 1. Patient original information.

Factors	Cases	Percentage (%)
Gender
Female	191	0.356
Male	346	0.644
Age(years)
≥60	290	0.540
<60	247	0.460
Clinical stage
Stage I	269	0.500
Stage II	57	0.106
Stage III	125	0.233
Stage IV	83	0.155
Unknow	3	0.006
T stage
T1(T1+T1a+T1b)	275	0.512
T2(T2+T2a+T2b)	69	0.128
T3(T3+T3a+T3b+T3c)	182	0.339
T4	11	0.021
Lymph node status
N0	240	0.447
N1	17	0.032
Nx	280	0.521
Metastatic
M0	426	0.793
M1	79	0.147
Mx	30	0.056
Unknow	2	0.004