Radiofrequency ablation versus hepatic resection for recurrent hepatocellular carcinoma: an updated meta-analysis

BMC Gastroenterology

Table 3 Subgroup analysis of overall survival and progression free survival

Subgroup	No. of studies	Participants			HR (95% CI)	P	Study heterogeneity			Analysis model
Subgroup	No. of studies	RHR	RFA	Total	HR (95% CI)	P	Χ²	I² (%)	P	Analysis model
OS
Patients in China	7	559	695	1254	0.79 (0.65–0.95)	0.013	6.11	1.9	0.410	Fixed
Tumor size≦3 cm	3	207	243	450	1.03 (0.69–1.52)	0.897	0.45	0	0.799	Fixed
Tumor size>3 cm	2	164	188	352	0.57 (0.37–0.89)	0.014	0.02	0	0.900	Fixed
PFS
Patients in China	4	249	273	522	0.79 (0.64–0.98)	0.029	0.24	0	0.971	Fixed
Tumor size≦3 cm	2	177	171	348	0.99 (0.71–1.37)	0.929	0.34	0	0.563	Fixed

ISSN: 1471-230X