Role of high definition colonoscopy in colorectal adenomatous polyp detection

Table 4 Comparison of standard vs high definition adenomatous polyp detection studies to date

Study	Date	Method	n	Colonoscope (resolution) (Angle) (NBI capable)		P value for adenomadetection rates
				Group 1	Group 2
East et al[13]	2008	Prospective nonrandomized	130	Olympus SD 140	Olympus HD 140	0.200
Pellise et al[12]	2008	Prospective randomized	620	Olympus SD 140	Olympus HD 170	0.850
Tribonias et al[14]	2010	Prospective randomized	390	Olympus SD 140	Olympus HD 170	0.160
Burke et al[16]	2010	Retrospective	852	Olympus SD 140	Olympus HD 170	0.360
Buchner et al[15]	2010	Retrospective	2430	Olympus SD 140	Olympus HD 170 NBI	0.012

NBI: Narrow-band imaging; SD: Standard definition; HD: High definition.