Table 4.

Meta-analysis of overall survival rates of other ablative technique versus radiofrequency ablation

	Cohort studies	RCTs
MWA vs. RFA	HR 0.80 95% CI 0.62–1.04	HR 0.58 95% CI 0.22–1.56
	[9–14]	[15, 17]
PEI vs. RFA	HR 1.67 95% CI 1.16–2.40	HR 1.26 95% CI 0.96–1.66
	[19, 21]	[22–26]
PEI plus RFA vs. RFA	NA	HR 0.61 95% CI 0.36–1.02
		[27, 29]
LSA vs. RFA	NA	HR 1.47 95% CI 1.01–2.15
		[7, 34, 35]

MWA microwave ablation, RFA radiofrequency ablation, PEI percutaneous ethanol injection, LSA laser ablation, HR hazard ratio, RCT randomized controlled trial, NA not applicable. Those in square brackets were numbers of references