Table 1.

Clinical information of the four datasets.

Characteristic		TCGA training datasets (n = 231)	TCGA test datasets (n = 231)	GSE19234 (n = 44)	GSE65904 (n = 210)
Age (years)	≤50	153	64	13	40
	>50	78	167	31	169
Survival status	Living	118	124	20	108
	Dead	113	107	24	102
Gender	Female	96	78	16	86
	Male	35	153	28	124
pathologic_T	T1	23	18
	T2	40	37
	T3	45	45
	T4	70	82
pathologic_N	N0	114	115
	N1	36	37
	N2	27	22
	N3	31	25
pathologic_M	M0	205	206
	M1	17	7
Tumor stage	Stage I	42	35
	Stage II	66	73
	Stage III	83	87	39
	Stage IV	16	7	5