Khan T, et al. – This randomized controlled study aimed to compare accuracy in diminutive polyp histology characterization using narrow–band imaging (NBI) between participants undergoing classroom didactic training vs. computer–based self–learning. For predicting diminutive polyp histology, the self–learning group demonstrated results on a par with or, for high–confidence predictions, even slightly superior to classroom didactic training. This approach could help in widespread training and clinical implementation of real–time polyp histology characterization.

• The authors randomized trainees at 2 institutions to classroom didactic training or computer-based self-learning.
• Experienced endoscopists reviewed a presentation on NBI patterns for adenomatous and hyperplastic polyps and 40 NBI videos, along with the interactive discussion in didactic training.
• Without interactive discussion, the self-learning group reviewed the same presentation of 40 teaching videos independently.
• Then both groups evaluated 40 testing videos of diminutive polyps under NBI.
• By comparing predicted and actual histology, performance characteristics were calculated.
• They used Fisher’s exact test and P < 0.05 was considered significant.

• In this study, 17 trainees participated (8 didactic training and 9 self-learning).
• Although sensitivity (86.9 % vs. 95.0 %) and accuracy (85.7 % vs. 93.9 %) of high-confidence predictions were higher in the self-learning group, a larger proportion of polyps were diagnosed with high confidence in the classroom group (66.5 % vs. 50.8 %; P < 0.01).
• However, no difference was found in the overall accuracy of histology characterization (83.4 % vs. 87.2 %; P = 0.19).
• When comparing sensitivity and specificity between the groups, similar results were noted.