Table 1. Baseline Characteristics of Patients.

Variable	RFA Group	Chemotherapy Group	P
Patients	60	66
Age (years old), mean ± SD	59.9 ± 9.3	60.4 ± 8.7	0.736
Sex, n (%)			0.931
Male	35 (58.3)	38 (57.6)
Female	25 (41.7)	28 (42.4)
TNM stage before curative surgery, n (%)			0.654
≤ IIA	26 (43.3)	26 (39.4)
≥ IIB	34 (56.7)	40 (60.6)
Differentiations, n (%)			0.880
Well differentiated	1 (1.7)	2 (3.0)
Moderately differentiated	50 (83.3)	54 (81.8)
Poorly differentiated	9 (15.0)	10 (15.2)
Period to recurrence, n (%)			0.632
< 12 months	45 (75.0)	47 (71.2)
≥ 12 months	15 (25.0)	19 (28.8)
Maximal tumor size, n (%)			0.269
> 1.5 cm	35 (58.3)	32 (48.5)
≤ 1.5 cm	25 (41.7)	34 (51.5)
Tumor number, n (%)			0.132
Single	38 (63.3)	33 (50.0)
Multiple	22 (36.7)	33 (50.0)
Presence of extrahepatic metastasis, n (%)			0.686
Yes	11 (18.3)	14 (21.2)
No	49 (81.7)	52 (78.8)

n = number, RFA = radiofrequency ablation, SD = standard deviation