Table 1.

Basic characteristics of included studies

Included research	Region	Research type	Study method	Study perspective	Study population	Intervention technique	Control comparator technique	Outcome indicator
Hayeon Kim [17]	USA	CUAf	Markov model	Payer	Unresectable CRC liver metastases	SBRTa	RFAb	ICERc
Leung [18]	Taiwan	CUA	Markov model	Payer	Advanced HCC	Sorafenib	SBRT	ICER
Pollom [19]	USA	CUA	Markov model	Social	Inoperable localized HCC	SBRT	RFA	ICER
Leung [20]	Taiwan	CUA	Markov model	Payer	Inoperable advanced HCC	Proton beam therapy	SBRT	ICER, NMBsc
Parikh [21]	USA	CEAg	Retrospective study	Payer	Early stage HCC	SBRT	RFA	ICERe

^a Stereotactic body radiotherapy; ^b radiofrequency ablation; ^c incremental cost effect ratio; ^d net monetary benefits; ^e life-year gained instead of quality life-year gained. ^f cost-utility analysis;^g cost-effectiveness analysis