Comparison between laparoscopic and open surgery for large gastrointestinal stromal tumors: A meta-analysis

Table 2 Newcastle-Ottawa Scale Assessment of enrolled studies

Ref.	Selection (0-4)				Comparability		Outcome (0-3)			Total
	REC	Snec	AE	OINP	SCB	SCA	AO	FU	AFC
Kim et al[10]	1	1	1	1	1	0	1	1	1	8
Lin et al[11]	1	1	1	1	1	1	1	1	0	8
Hsiao et al[12]	1	1	1	1	1	0	1	1	1	8
Takahashi et al[13]	1	1	1	0	1	0	1	1	1	7
Khoo et al[14]	1	1	1	1	1	1	1	1	1	9

REC: Representativeness of the exposed cohort; SNEC: Selection of the no exposed cohort; AE: Ascertainment of exposure; OINP: Outcome of interest not presented in the start of study; SCB: Study controls for basic characteristics; SCA: Study controls for additional factor; AO: Assessment of outcome; FU: Follow-up; AFC: Adequacy of follow up.