Figure 3

Time to first post-operative colonoscopy for Calgary patients Kaplan Meier curve of time to first post-operative colonoscopy for patients who underwent primary cancer surgery in Calgary, stratified by time period of diagnosis. A major change in practice patterns is evident as patients diagnosed from 1990 – 1995 are much more likely to undergo a post-operative colonoscopy, primarily due to increased use of colonoscopy at one year after surgery.