Table 2.

The subgroups analysis of clinical characteristics between low- and high- risk groups

TCGA	level	High_risk	Low_risk	p	test
n		40	40
age (%)	Age < 60	16 (40.0)	20 (50.0)	0.500	Chisq Test
	Age > =60	24 (60.0)	20 (50.0)
gender (%)	FEMALE	14 (35.0)	21 (52.5)	0.176	Chisq Test
	MALE	26 (65.0)	19 (47.5)
M (%)	m0	25 (64.1)	26 (66.7)	0.588	Chisq Test
	m1	3 (7.7)	1 (2.6)
	mx	11 (28.2)	12 (30.8)
N (%)	n0	25 (64.1)	27 (67.5)	0.935	Chisq Test
	nx	14 (35.9)	13 (32.5)
T (%)	t2	5 (12.5)	9 (22.5)	0.440	Chisq Test
	t3	18 (45.0)	14 (35.0)
	t4	17 (42.5)	17 (42.5)
stage (%)	N/A	1 (2.5)	0 (0.0)	0.481	Chisq Test
	Stage II	20 (50.0)	19 (47.5)
	Stage III	16 (40.0)	20 (50.0)
	Stage IV	3 (7.5)	1 (2.5)
histological_type (%)	Epithelioid Cell	10 (25.0)	3 (7.5)	0.010	Chisq Test
	Spindle Cell	9 (22.5)	21 (52.5)
	Spindle Cell|Epithelioid Cell	21 (52.5)	16 (40.0)
vital_status (%)	ALIVE	23 (57.5)	34 (85.0)	0.014	Chisq Test
	DEAD	17 (42.5)	6 (15.0)
subtype (%)	subtype1	3 (7.5)	12 (30.0)	0.000	Chisq Test
	subtype2	9 (22.5)	14 (35.0)
	subtype3	10 (25.0)	12 (30.0)
	subtype4	18 (45.0)	2 (5.0)
chromosome.3.status (%)	Disomy 3	12 (30.0)	26 (65.0)	0.004	Chisq Test
	Monosomy 3	28 (70.0)	14 (35.0)
GEO	level	High_risk	Low_risk	p	test
n		14	14
Age (%)	Age < 60	5 (35.7)	7 (50.0)	0.703	Fisher exact test
	Age > =60	9 (64.3)	7 (50.0)
vital_status (%)	ALIVE	3 (21.4)	9 (64.3)	0.052	Fisher exact test
	DEAD	11 (78.6)	5 (35.7)
Chromosome.3.status (%)	Disomy 3	4 (28.6)	10 (71.4)	0.053	Fisher exact test
	Monosomy 3	10 (71.4)	4 (28.6)
Metastasis (%)	No	5 (35.7)	10 (71.4)	0.130	Fisher exact test
	Yes	9 (64.3)	4 (28.6)

M Metastasis, N Lymph Node, T Tumor size