Efficacy of various endoscopic modalities in detecting dysplasia in ulcerative colitis: A systematic review and network meta-analysis

Table 1 The characteristics and outcomes of the included studies

Study	Ref.	Design	Reference	Comparator	Disease Type, Age	Reference			Comparator
						Bx with dysplasia/total bx (n)	Patients with dysplasia/total patients (n)	Bx with dysplasia/total patients (n)	Bx with Dysplasia/total Bx (n)	Patients with dysplasia/total patients (n)	Bx with dysplasia/total patients (n)
NBI HD vs WL HD	Dekker et al[32], 2007	PRCT	NBI HD	WL HD	UC, Adults	9/52	8/42	9/42	21/1550	7/42	21/42
	Van den Broek, et al[33], 2011	PRCT	NBI HD	WL HD	UC, Adults	13/105	8/48	13/48	14/1657	12/48	14/48
	Ignjatovic et al[34], 2012	PRCT	NBI HD	WL HD	UC, Adults	6/1380	5/56	6/56	7/1375	5/56	7/56
	Leifeld et al[35], 2015	PRCT	NBI HD	WL HD	UC, Adults	31/1883	22/159	31/159	30/7565	24/159	30/159
CE HD vs WL SD	Kiesslich et al[36], 2003	PRCT	CE HD	WL SD	UC, Adults	35/3545	13/84	35/84	10/3094	6/81	10/81
CE HD vs NBI HD	Watanabe et al[37], 2016	PRCT	CE HD	NBI HD	UC, Adults	19/181	11/130	19/130	27/183	17/133	27/133

UC: Ulcerative colitis; NBI: Narrow band imaging; CE: Chromoendoscopy; WL: White light; PRCT: Prospective randomized controlled trials; Bx: Biopsy.