AFP and cirrhosis of liver: Before PSM, the RFA group contained more young patients; had a higher proportion of divorced, widowed, or separated persons; had a higher percentage of men, white people, and patients with unknown tumor differentiation grade; had a higher level of alpha-fetoprotein; were more likely to have liver cirrhosis and smaller tumor size; more likely to undergo chemotherapy; and had a higher proportion of people with tumor extension 390 and 440 than the HR group.