A four-hypoxia-genes-based prognostic signature for oral squamous cell carcinoma

BMC Oral Health

Table 1 Clinical characteristics of TCGA and GEO sets

Variable	TCGA set (n = 348)	GEO set (n = 218)
Age
Median	61	58
Range	19–90	35–87
Gender
Female	106	40
Male	242	178
Clinical T
T1	19	30
T2	94	65
T3	76	40
T4	106	83
TX	5	0
Clinical N
N0	160	64
N1	54	30
N2	75	114
N3	3	10
NX	8	0
Clinical M
M0	288	213
M1	0	5
MX	12	0
TNM stage
Stage I	20	13
Stage II	55	25
Stage III	61	30
Stage IV	176	150
Grade
G1	52	N/A
G2	212	N/A
G3	73	N/A
G4	2	N/A
GX	7	N/A
Radiation therapy
NO	111	N/A
YES	172	N/A
Race
American Indian or Alaska native	1	N/A
Asian	9	N/A
Black or African American	25	N/A
White	303	N/A
Alcohol History
NO	112	22
YES	228	196
Lymphovascular invasion
NO	171	N/A
YES	76	N/A
Perineural invasion
NO	122	N/A
YES	139	N/A
Vital status
Alive	191	138
Dead	157	80

ISSN: 1472-6831