Percentage of average-risk patients aged 50 years to 75 years receiving a screening colonoscopy with biopsy or polypectomy and pathology findings of 1 of 2 tubular adenomas < 10 mm with a recommended follow-up interval of not less than 5 years OR pathology findings of only hyperplastic polyp findings in rectum or sigmoid with a recommended follow-up interval of 10 years for repeat colonoscopy documented in their colonoscopy report Rate 1: 1 to 2 tubular adenomas < 10 mm OR Rate 2: only hyperplastic polyp(s) in rectum or sigmoid