Table 1.

Demographic and baseline disease characteristics of samples in the TCGA-LIHC project

Covariates	Total	Training set	Testing set	P value*
Age - no. (%)				1
<=65	227(62.19%)	114(61.96%)	113(62.43%)
> 65	138(37.81%)	70(38.04%)	68(37.57%)
Gender - no. (%)				0.9091
Female	119(32.6%)	61(33.15%)	58(32.04%)
Male	246(67.4%)	123(66.85%)	123(67.96%)
Grade - no. (%)				0.8485
G1	55(15.07%)	27(14.67%)	28(15.47%)
G2	175(47.95%)	92(50%)	83(45.86%)
G3	118(32.33%)	58(31.52%)	60(33.15%)
G4	12(3.29%)	5(2.72%)	7(3.87%)
Unknow	5(1.37%)	2(1.09%)	3(1.66%)
Stage - no. (%)				0.163
Stage I	170(46.58%)	79(42.93%)	91(50.28%)
Stage II	84(23.01%)	41(22.28%)	43(23.76%)
Stage III	83(22.74%)	44(23.91%)	39(21.55%)
Stage IV	4(1.1%)	4(2.17%)	0(0%)
Unknow	24(6.58%)	16(8.7%)	8(4.42%)

*P value less than 0.05 is considered to be statistically significant