Figure 2From: Accuracy of endoscopic diagnosis of Helicobacter pyloriinfection according to level of endoscopic experience and the effect of training Comparison of diagnostic yield of H. pylori infection status in two beginner endoscopists before and after training. Diagnostic yield of Beginner 1 (A) and Beginner 2 (B). †P-values are statistically significant at <0.05. Analysis performed using Mcnemer’s test. Error bar represents the 95% CI of diagnostic yield. Abbreviations: HP, H. pylori; PPV, positive predictive value.Back to article page