Adjuvant transarterial chemoembolization (TACE) on overall survival in prespecified or exploratory subgroups. Odds ratio (OR) of adjuvant TACE on overall survival was significantly different in different tumor size subgroups (OR = 0.60 in tumor size ≤5 cm subgroup and OR = 1.19 in tumor size >5 cm subgroup, p = .006 for interaction). In addition, adjuvant TACE showed consistent protective effect on overall survival in all of the remaining subgroups (all p > .05 for interaction).
Abbreviations: AFP, alpha‐fetoprotein; CI, confidence interval; ES, Edmonson‐Steiner; HbsAg, hepatitis B surface antigen.