Table 2.

Definitions of adenoma detection rate and adenoma burden

Adenoma detection rate
Adenoma detection rate	Percentage of patients with tubular, tubullovillous, or villous adenomas
Advanced adenoma detection rate	Percentage of patients with advanced adenomas (>1 cm in size, villous histology, high-grade dysplasia)
Multiple adenoma detection rate	Percentage of patients with ≥3 adenomas
Serrated lesion detection rate	Percentage of patients with serrated adenomas or hyperplastic polyps proximal to splenic flexure
Precancerous lesion detection rate
Precancerous lesion detection rate	Percentage of patients with adenomas or serrated lesions
Adenoma burden
Mean number of adenomas per screening procedure	Total number of adenomas detected divided by the number of screening procedures
Mean number of adenomas per screening procedure positive for precancerous lesions	Total number of adenomas detected divided by the number of screening procedures positive for precancerous lesions

Precancerous lesions include adenoma and serrated lesions.