Fluorescence guided intraluminal endoscopy in the gastrointestinal tract: A systematic review

Table 2 Newcastle Ottawa quality assessment scale

Ref.	Selection					Comparability		Outcome				Total score
	1	2	3	4	Score	1	Score	1	2	3	Score
Iseki et al[25], 2000	a	b	a	a	●○●●	-	○○	a	a	a	●●●	Poor quality
Mataki et al[21], 2003	a	b	a	b	●○●○	-	○○	a	a	a	●●●	Poor quality
Okamoto et al[22], 2005	a	b	a	b	●○●○	-	○○	c	a	a	○●●	Poor quality
Ishihara et al[12], 2006	a	b	a	a	●○●●	-	○○	a	a	a	●●●	Poor quality
Kimura et al[23], 2007	a	b	a	b	●○●○	-	○○	a	a	a	●●●	Poor quality
Ortiz- Fernandez-Sordo et al[24], 2018	a	b	a	a	●○●●	-	○○	a	a	a	●●●	Poor quality
Hartmans et al[15], 2018	a	b	a	a	●○●●	-	○○	c	a	a	○●●	Poor quality

●/a: One star rewarded; ○/b/c: No star rewarded.