Table 3. Diagnostic accuracy of endoscopy with WLI and TXI for Helicobacter pylori -active gastritis.

	Accuracy	Sensitivity	Specificity	PPV	NPV
WLI (95 % CI)	78.7 (74.9–81.0)	52.5 (47.7–55.4)	96.1 (92.9–98.0)	90.0 (81.9–94.9)	75.2 (72.7–76.7)
TXI (95 % CI)	85.3 (81.6–87.6)	69.2 (64.5–72.0)	96.1 (93.0–98.0)	92.2 (86.0–96.0)	82.4 (79.7–84.0)
P value	0.034	0.012	1.000	0.779	0.081

CI, confidence interval; PPV, positive predict value; NPV, negative predict value; WLI, white light imaging; TXI, texture and color enhancement imaging.