Fig. 2

Comparison of pre- and post-training diagnostic accuracy within each group. Mean accuracy of pre-training and post- training (together with 95% confidence intervals) of the trainee group and junior endoscopist group. No significant differences were observed between the two groups before and after training. The accuracy of both groups increased after training, but a statistically significant difference was only found in the trainee group. (ns) not significant, *p < 0.05