The Efficacy of Surgical Resection versus Radiofrequency Ablation for the Treatment of Single Hepatocellular Carcinoma: A SEER-Based Study

Table 1

Characteristics of patients.

	Before PSM ()				After PSM ()
Characteristics	SR ()	RFA ()	P	SMD	SR ()	RFA ()	P	SMD
Age of diagnosis (%)			0.528	0.030			0.653	0.032
30–59 years	530 (35.4)	230 (34.0)			193 (36.8)	185 (35.3)
60–84 years	968 (64.6)	447 (66.0)			339 (64.7)	331 (63.2)
Gender (%)			0.434	0.039			0.615	0.035
Male	1085 (72.4)	502 (74.2)			392 (74.8)	400 (76.3)
Female	413 (27.6)	175 (27.6)			132 (25.2)	124 (23.7)
Race (%)			<0.001	0.322			0.674	0.002
White	808 (54.0)	463 (68.4)			345 (65.8)	349 (66.6)
Black	207 (13.8)	75 (11.1)			66 (12.6)	57 (10.9)
Others	483 (32.2)	139 (20.5)			113 (21.6)	118 (22.5)
Grade (%)			<0.001	0.474			0.851	0.017
I	326 (21.8)	267 (39.4)			179 (34.2)	179 (34.2)
II	821 (54.8)	334 (49.3)			283 (54.0)	276 (52.7)
III	324 (21.6)	74 (11.0)			59 (11.3)	67 (12.8)
IV	27 (1.8)	2 (0.3)			3 (0.5)	2 (0.3)
SEER stage (%)			<0.001	0.147			1	<0.001
Localized	1381 (92.2)	591 (87.3)			481 (91.8)	481 (91.8)
Regional	117 (7.8)	86 (12.7)			43 (8.2)	43 (8.2)
Chemotherapy (%)			<0.001	0.340			0.440	0.044
No	1343 (89.7)	507 (74.9)			449 (85.7)	439 (83.8)
Yes	155 (10.3)	170 (25.1)			75 (14.3)	85 (16.2)
Tumor size (%)			<0.001	0.951			0.067	0.034
<3 cm	388 (25.9)	368 (54.4)			277 (52.9)	254 (48.5)
3–5 cm	566 (37.8)	266 (39.3)			193 (36.8)	228 (43.5)
>5 cm	544 (36.3)	43 (6.3)			54 (10.3)	42 (8.0)
AJCC T (%)			0.643	0.023			1	0.004
T1	1082 (72.2)	482 (71.2)			407 (77.7)	408 (77.9)
T2	416 (27.8)	195 (28.8)			117 (22.3)	116 (22.1)