Study design
colorectal polyp
MAY, COLORECTAL POLYP
This research was conducted as a prospective randomized controlled study at five university and academic centers in China from January 1, 2021 to May 31, 2021. Trainees with no previous formal training in the use of Narrow band imaging (NBI) or blue light imaging (BLI) for prediction of colorectal polyp histology using the NICE classification were invited to participate. We enrolled trainees (i) with less than 3 years of colonoscopic experience; (ii) with no previous formal training in the use of NBI or BLI for prediction of colorectal polyp histology; and (iii) with no previous formal training of the NICE classification. Participating trainees provided written informed consent, as they were regarded as the study subjects. They were randomly allocated to either the self-driven training group or the interactive training group using a computerized random number (Fig. Flow chart of enrolled patient lesions. NBI: narrow band imaging; BLI: blue light imaging; NICE classification: the NBI International Colorectal Endoscopic classification