Table 3

Comparisons of cumulative local recurrence, new recurrence, overall survival, and cancer free survival rates among the radiofrequency thermal ablation (RFTA), percutaneous ethanol injection (PEI), and percutaneous acetic acid injection (PAI) subgroups

Group	Subgroup	No of cases	Local recurrence rate (%)			New recurrence rate (%)			Overall survival rate (%)			Cancer free survival rate (%)
Group	Subgroup	No of cases	1 y	2 y	3 y	1 y	2 y	3 y	1 y	2 y	3 yr	1 y	2 y	3 y
^ap = 0.043; ^bp = 0.013; ^cp = 0.018; ^dp = 0.009; ^ep = 0.011; ^fp = 0.032; ^gp = 0.027; ^hp = 0.031; ⁱp = 0.035; other comparisons were not significant.
RFTA	1–2 cm HCC	36	4	9	9^a	22	31	40	96	82	75	81	63	45
PEI	1–2 cm HCC	37	7	18	18^b	19	35	44	93	79	67	76	48	26
PAI	1–2 cm HCC	38	7	16	16^c	18	36	41	93	78	69	78	47	28
RFTA	2–3 cm HCC	26	14	21	21^{a d e}	28	42	49	90	79	72^{f g}	72	57	40^{h i}
PEI	2–3 cm HCC	25	24	47	47^{b d}	30	44	54	87	60	47^f	64	36	17^h
PAI	2–3 cm HCC	25	21	44	44^{c e}	25	44	52	87	63	48^g	65	38	18ⁱ