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INTRODUCTION: Mailed fecal immunochemical test (FIT) outreach is an effective strategy to increase colorectal cancer (CRC) screening. The aim of this study was to determine the patient-level, clinic-level, and geographic-level factors associated with CRC screening completion in a mailed FIT outreach program. METHODS: This retrospective cohort study was conducted in the integrated healthcare system of University of Washington Medicine and included patients aged 50–75 years, who were due for CRC screening, and had a primary care encounter in the past 3 years. Eligible patients received mailed outreach that included a letter with information about CRC screening, FIT kit, and a prepaid return envelope. CRC screening and factors associated with completion were obtained from electronic health records and the CRC screening program database. RESULTS: Of the 9,719 patients who received mailed outreach, 29.6% completed FIT mailed outreach. The median FIT return time was 27 days (interquartile range 14–54). On multivariate analysis, patients with a higher area deprivation index, insured through Medicaid, living without a partner, and whose last primary care visit was >12 months ago were less likely to complete a FIT compared with their counterparts. Over a 12-month period, overall CRC screening across the health system increased by 2 percentage points (68%–70%). DISCUSSION: Mailed FIT outreach in an integrated academic-community practice was feasible, with 32% of invited patients completing CRC screening by FIT or colonoscopy, on par with published literature. Patient and geographic-level factors were associated with CRC screening completion. These data will inform additional interventions aimed to increase CRC screening participation in this population.
Simpson et al. (Mon,) studied this question.