Tolerability of magnifying narrow band imaging endoscopy for esophageal cancer screening

Figure 3 Mean visual analogue scale scores for dyspnea. There were no differences between the two groups (ANOVA for repeated measures). Visual analogue scale (VAS) scores for dyspnea at 1 h after the examinations were better in the NBI group than those in the Lugol group (^aP < 0.05, Lugol group vs NBI group, Wilcoxon’s rank sum test).