Table 1. Studies included in the meta-analysis.

Author	Year		Patient Num	CT Slices / MR Strength Field	Access Type	Calculating Basis	Contrast Enhancement	Noninvasive Modalities	TP	FP	FN	TN
Cansu[10]	2013	41		64	AVF and AVG	segment	yes	CTA	34	2	1	30
Wasinrat[24]	2011	21		64	AVF	segment	yes	CTA	32	6	0	109
Rooijens[21]	2008	15		4	AVF and AVG	segment	yes	CTA	9	1	2	124
Heye[16]	2009	36		64	AVF	segment	yes	CTA	46	8	5	103
Dimopoulou[12]	2011	24		16	AVF and AVG	segment	yes	CTA	37	0	2	33
Ko[17]	2005	36		4	AVF and AVG	segment	yes	CTA	126	2	2	69
Lin[19]	1998	9		4	AVF	patient	yes	CTA	6	0	0	3
Cavagna[11]	2000	13		4	AVF	patient	yes	CTA	11	0	0	2
Froger[15]	2005	48		1.5	AVF and AVG	segment	yes	MRA	68	3	2	209
Waldman[23]	1996	13		0.5	AVF and AVG	segment	no	MRA	8	1	0	33
Takahashi[22]	2004	15		1	AVF	segment	yes	MRA	16	3	3	19
Duijm[14]	2006	101		1.5	AVF and AVG	segment	yes	MRA	18	1	0	82
Doelman[13]	2005	81		1.5	AVF and AVG	segment	yes	MRA	106	7	5	315
Planken[20]	2003	15		1.5	AVF and AVG	patient	yes	MRA	10	4	0	1
Cavagna[11]	2000	13		0.5	AVF	patient	yes	MRA	10	0	1	2
Laissy[18]	1999	19		1	AVF and AVG	patient	no	MRA	11	1	1	6

Calculating Basis means stenosis number count by lesion per patient or lesion per vascular access segment.

TP=true positive; FP=false positive; FN=false negative; TN=true negative