Fig. 2.
Accuracy of physician estimates of rate of interval high-risk adenoma (HRA) at 5-year follow-up based on polypectomy scenarios. Estimates were determined as accurate estimate, overestimate, and underestimate of rate of interval HRA based on data from prior observations. Reference standards for rate of interval HRA based on initial findings were as follows: hyperplastic polyp: 3 %; small tubular adenomas: 6 %; multiple small adenomas: 16 %; advanced adenoma (villous component): 16 %; resected colorectal cancer: 15–35 %. *No underestimation was observed for rate of interval HRA for baseline findings of two small (<1 cm) adenomas or hyperplastic polyps. Colorectal cancer (CRC)