Predicting Risk for Post-polypectomy Colorectal Cancer

This originated as an observational study of Kaiser Permanente Northern California (KPNC) patients with a history of adenoma diagnosed by colonoscopy who received a subsequent surveillance colonoscopy between 2014 and 2019. The original goal of the study was to develop a risk prediction model that would help identify patients at highest risk for a diagnosis of advanced neoplasia (colorectal cancer and/or advanced adenoma) at or within 6 months following their surveillance colonoscopy. Candidate predictors of interest included patient demographics, medical history, and details related to the index colonoscopy. The investigators are now at the implementation stage and applying the risk prediction model to patients awaiting surveillance colonoscopy at select KPNC service areas to help identify those at highest risk for colorectal cancer based on their risk scores.

Inclusion Criteria:Patients are on the current colonoscopy pending list; excluding those who were fecal immunochemical test-positive, screening colonoscopies, had a colonoscopy in last 12 months or on a voluntary "pause" listHereditary colorectal cancer syndrome (e.g. Lynch syndrome)Diagnostic, fecal immunochemical test -positive, or screening indication for colonoscopy