Table 2. Baseline characteristics of the patients in different risk groups.

Characteristics	TCGA-LIHC cohort			ICGC-LIRP-JI cohort
	High risk	Low risk	P value	High risk	Low risk	P value
Age
< 60 year	74 (20.3%)	91 (24.9%)	0.082	28 (12.1%)	16 (6.9%)	0.540
≥ 60 year	108 (29.6%)	92 (25.2%)		128 (55.4%)	59 (25.5%)
Gender
Female	61 (16.7%)	58 (15.9%)	0.710	40 (17.3%)	21 (9.1%)	0.703
Male	121 (33.2%)	125 (34.2%)		116 (50.2%)	54 (23.4%)
Grade
G1+G2	104 (28.5%)	126 (34.5%)	0.016	–	–
G3+G4	76 (20.8%)	54 (14.8%)		–	–
unknown	2 (0.5%)	3 (0.8%)		–	–
Stage
I + II	116 (31.8%)	138 (37.8%)	0.023	86 (37.2%)	55 (23.8%)	0.008
III + IV	52 (14.2%)	35 (9.6%)		70 (30.3%)	20 (8.7%)
unknown	14 (3.8%)	10 (2.7%)		0 (0%)	0 (0%)