Comparison of white-light endoscopy, optical-enhanced and acetic-acid magnifying endoscopy for detecting gastric intestinal metaplasia: A randomized trial

Table 3 Diagnostic accuracy of three endoscopic methods for gastric intestinal metaplasia sites

	Sensitivity	Specificity	PPV	NPV	Accuracy	P value
WLE	29.5%	96.1%	80.2%	71.9%	73%	0.001
ME-OE	82.9%	93.3%	86.9%	91.2%	89.7%		0.011
ME-AAC	79.9%	88.7%	79.0%	89.2%	85.6%

WLE: White-light endoscopy; ME-OE: Optical-enhanced magnifying endoscopy; ME-AAC: Acetic-acid chromoendoscopy combined with magnifying endoscopy; PPV: Positive predictive value; NPV: Negative predictive value.