Fig. 1.

Flowchart of post-colonoscopy colorectal cancer (PCCRC) identification and subcategory classification. Interval PCCRC was defined as a PCCRC diagnosed before the surveillance interval as determined at the index colonoscopy. Non-interval type A was defined as a PCCRC diagnosed at the recommended surveillance interval. Non-interval type B was defined as a PCCRC diagnosed after the recommended surveillance interval. Non-interval type C was defined as a PCCRC diagnosed after the intended recommended surveillance interval, but with surveillance not implemented owing to patient co-morbidity.