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

Table 2 Diagnostic accuracy of three endoscopic methods for patients with gastric intestinal metaplasia

	Sensitivity	Specificity	PPV	NPV	Accuracy	P value
WLE	39.7%	61.4%	44.3%	56.8%	51.9%	0.001
ME-OE	92.6%	90.9%	88.7%	94.1%	91.7%		0.001
ME-AAC	85.3%	87.5%	84.1%	88.5%	86.5%

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.