Table 1.

Demographic and clinical characteristics of COAD patients from TCGA.

Variable	Total (n=346)	Training Set (n=173)	Testing Set (n=173)	χ2	P value
Age at diagnosis (years)	66.35 ± 12.56	66.34 ± 12.16	66.35 ± 12.98	1.091	0.569
Gender				0.145	0.746
Male	189	96	93
Female	157	77	80
Stage				5.991	0.112
I	62	34	28
II	136	54	77
III	98	51	47
IV	50	29	21
T Stage				1.293	0.731
T1	8	4	4
T2	62	35	27
T3	240	117	123
T4	36	17	19
Positive nodes  N				0.969	0.325
N0	205	98	107
N+	141	75	66
Distant metastasis				1.496	0.222
M0	296	144	152
M1	50	29	21