Life Expectancy-informed Colorectal Cancer Screening

The purpose of this study is to improve life-expectancy concordant colorectal cancer screening for adults over 75 years through design and testing of a life expectancy notification to clinicians delivered via the electronic health record. This study has three components: 1. The investigators will develop a life expectancy prediction model using patient data from the Cleveland Clinic electronic health record (EHR) and test it against two existing life expectancy prediction models to determine which should be used in clinical care. This is an observational cohort study. 2. Concurrently with the development and testing of the life expectancy prediction model, the investigators will conduct interviews with clinicians to generate knowledge regarding the optimal way to integrate life expectancy information into decision making about colorectal cancer screening in patients over 75 years. This is a qualitative study. 3. The investigators will then conduct a cluster randomized trial of a clinical decision support-delivered life expectancy notification on life expectancy-congruent colorectal cancer screening orders by primary care clinicians.