Table 1.

Summary of meta-analyses of radiofrequency ablation vs liver resection and radiofrequency ablation vs percutaneous ethanol injection

Author	Diagnosis	Treatment	n	Tumor response (OR)	Complications (OR)	Local recurrence (OR)	Overall survival (OR)
Zhou et al[47]	HCC	RFA	744	-	0.29 (0.13-0.65)	4.50 (2.45-8.27)	0.60 (0.36- 1.01) (5 yr)
		resection	667
Wu et al[50]	CLM	RFA	273	-	0.32 (0.07-1.52)	4.89 (1.73-13.87)	0.41 (0.22-0.90) (5 yr)
		resection	574
Bouza et al[63]	HCC	RFA	396	1.10 (1.04-1.17)	Total: 2.55 (1.8-3.65)	0.37 (0.23-0.59)	1.24 (1.05-1.48) (4 yr)
		PEI	391		Major: 1.85 (0.68-5.01)

PEI: Percutaneous ethanol injection; RFA: Radiofrequency ablation; OR: Odds ratio; HCC: Hepatocellular carcinoma; CLM: Colorectal liver metastases.