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The adenoma detection rate (ADR) is the percentage of patients aged ≥50 years undergoing first-time screening colonoscopy who have one or more conventional adenomas detected and removed. In practice, clinicians are sometimes confused as to whether to include surveillance examinations or patients with a strong family history of colorectal cancer in calculating the ADR.
To determine how variability in choice of exclusion criteria (examinations not counted in the ADR calculation) affects the ADR, researchers applied various exclusion criteria used in 30 previous studies to 20,040 colonoscopy examinations performed by 11 gastroenterologists in a single practice.
Application of the various exclusion criteria resulted in 0% to 92% of the examinatio…