Identification of Key Genes of Prognostic Value in Clear Cell Renal Cell Carcinoma Microenvironment and a Risk Score Prognostic Model

Table 1

Clinical characteristics of patients in the training and validation cohorts.

Variables	Train cohort ()	Validation cohort ()	value
Age (years)			0.6834
Gender (female vs. male)			0.6476
Female	97	186
Male	167	344
Grade			0.9749
I	9	14
II	110	227
III	105	206
IV	36	75
Unknown	4	8
Stage			0.9768
I	132	265
II	25	57
III	62	123
IV	43	82
Unknown	2	3
T classification			0.9619
T1	136	271
T2	31	69
T3	91	179
T4	6	11
M classification			0.8932
M0	206	420
M1	40	78
Unknown	18	32
N classification			0.6492
N0	111	239
N1	10	16
Unknown	143	275
Survival status			0.9383
Dead	82	166
Alive	182	364