Figure 3
Relationship between the uniEPMR rate and the number of cases experienced (by lesion size). The mean of each endoscopist’s uniEPMR rate is plotted by lesion size (LOESS regression). The vertical axis shows the uniEPMR rate, and the horizontal axis shows the number of experienced cases. The blue circle represents the fitted LOESS curve, and the error bar represents 95% confidence intervals (generally per 10 cases). The same plot was also combined with the percentage of non-polypoid lesions treated according to the number of experienced cases (every 40 cases). This percentage was indicated by a light blue broken line, with the numbers displayed on the vertical axis on the right. (A) For lesion sizes 10–19 mm, the uniEPMR rate decreases until about 160 cases, but then increases. (B) For lesion sizes 20–29 mm, the uniEPMR rate generally decreased with increasing case experience. (C) The uniEPMR rate for lesion sizes ≥ 30 mm was originally high, but the uniEPMR rate did not generally decrease with increasing experience. (D) The relationship between the uniEPMR rate and the number of experienced cases for all sizes.
