Table 4.

Variables (n=6) that were most commonly found to be significant predictors of death in hepatocellular carcinoma in 72 studies

Variable	No. of studies in which variable was among the first five significant variables	No. of studies evaluating the variable	% of studies in which the variable was among the first five/total of studies
Portal vein thrombosis	22	32	69
Tumour size	20	33	61
AFP	20	41	49
Child–Pugh class	18	33	55
Bilirubin	15	24	63
CLIP score*	11	15	73

^*Cancer of the Liver Italian Program (consists of portal vein thrombosis, tumour size, AFP and Child–Pugh class).

AFP, α-foetoprotein; CLIP, Cancer of the Liver Italian Program.