Table 1.

Clinicopathological characteristics of patients in the TCGA-KIRC cohort.

Characteristic	Training cohort (n = 267)		Testing cohort (n = 246)		Entire cohort (n = 513)
	Number	%	Number	%	Number	%
Age (years)
≤65	174	65.2	164	66.7	338	65.9
>65	93	34.8	82	33.3	175	34.1
Gender
Male	185	69.3	151	61.4	336	65.5
Female	82	30.7	95	38.6	177	34.5
Pathological stage
Stage I	137	51.3	118	48.0	255	49.7
Stage II	30	11.2	24	9.8	54	10.5
Stage III	58	21.8	64	26.0	122	23.8
Stage IV	42	15.7	40	16.2	82	16.0
Histological grade
G1	8	3.0	5	2.0	13	2.5
G2	109	40.8	114	46.3	223	43.5
G3	110	41.2	94	28.2	204	39.8
G4	40	15.0	33	13.5	73	14.2
T stage
T1	141	52.8	120	48.8	261	50.9
T2	38	14.2	28	11.4	66	12.9
T3	83	31.1	92	37.4	175	34.1
T4	5	1.9	6	2.4	11	2.1
N stage
N0	122	45.7	112	45.5	234	45.6
N1	9	3.4	5	2.0	14	2.7
Nx	136	50.9	129	45.5	265	51.7
M stage
M0	214	80.1	196	79.7	410	79.9
M1	40	15.0	37	15.0	77	15.0
Mx	13	4.9	13	5.3	26	5.1
Outcome
Alive	189	70.8	162	65.9	351	68.4
Dead	78	29.2	84	34.1	162	31.6