Value of Magnifying Chromoendoscopy and Magnifying Optical Enhancement Technology in Classifying Colorectal Polyps: A Prospective Controlled Study

Table 3

Diagnostic accuracy and time in two methods.

	Overall		ME-OE		ME-CE
	ME-OE	ME-CE	Stage 1	Stage 2	Stage 1	Stage 2
Sensitivity (%)	91	85	96	90	87	84
Specificity (%)	95	96	85	1	93	98
PPV (%)	94	94	86	1	93	96
NPV (%)	92	90	95	93	88	92
Accuracy (%)	93	92	90	96	90	93
value	0.639		0.145		0.418
	0.859	0.827	0.804	0.912	0.800	0.848
Time (s)
value	0.001		0.001		0.001

PPV: positive predictive value; NPV: negative predictive value; ME-CE: magnifying chromoendoscopy; ME-OE: magnifying optical enhancement technology; SD: standard deviation.