Table 1.

Clinical features of two clusters.

	Cluster1	Cluster2	P value
Number	247	263	.553
Age	66[58.25,72.75]	67[59,73]
Gender			.971
Female	126	149
Male	121	114
T stage			.797
T1	79	88
T2	133	143
T3	25	20
T4	9	10
TX	1	2
N stage			.514
N0	161	166
N1	43	52
N2	38	36
N3	2	0
NX	3	9
M stage			.792
M0	174	169
M1	12	13
MX	61	81
Pathological stage			.912
Stage I	128	145
Stage II	57	63
Stage III	43	41
Stage IV	13	13
Not reported	6	1