Video Comment on Plumb et al.

Andrew A. Plumb et al. Terminal digit preference biases polyp size measurements at endoscopy, computed tomographic colonography, and histopathology

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This paper addresses the issue of incorrect measurement of polyp size at colonoscopy, radiology, and histology as a result of terminal digital preference bias. This bias is due to an operator’s tendency to classify polyps as equal to or larger than 10 mm. An original and powerful statistical method shows that endoscopists, radiologists, and pathologists all exhibit a small but consistent terminal digit preference when measuring colorectal polyp size. Such a systematic measuring error may have potential impact on patient management.