BMC Cancer

Table 2 Correlations between risk scores and clinicopathological characteristics in the TCGA cohort and ICGC cohort

From: Four-gene signature predicting overall survival and immune infiltration in hepatocellular carcinoma by bioinformatics analysis with RT‒qPCR validation

	Parameters	Risk score		χ²	P
	Parameters	Low	High	χ²	P
TCGA cohort	Age			9.9541	0.0016^a
	≤ 60	69	98
	> 60	100	71
	Gender			2.3110	0.1285^a
	male	122	109
	female	47	60
	Grade			43.9071	< 0.0001^a
	G1-G2	135	76
	G3-G4	34	93
	T stage			9.1249	0.0025^a
	T1-T2	139	115
	T3-T4	30	54
	TNM Stage			8.1880	0.0042^a
	I-II	137	114
	III-IV	32	55
ICGC cohort	Age			0.2024	0.6528^a
	≤ 68	58	62
	> 68	63	60
	Gender			0.1654	0.6842^a
	male	92	90
	female	29	32
	TNM Stage			5.9368	0.0148^a
	I-II	82	64
	III-IV	39	58

^a Pearson chi-square test
^b Continuity modified chi-square test
^c Fisher's exact test

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