• Catherine Cheney, Alice Parish, Donna Niedzwiecki, Chukwuemeka Oko, Christy Walters, David Halpern, Leah Helmueller, Nancy El Hoyek, Lesley-Ann Miller-Wilson, and Brian A Sullivan.
• Department of Medicine, Duke University Medical Center, Durham, NC, USA.
• Curr Med Res Opin. 2024 Mar 1; 40 (3): 431439431-439.

ObjectiveReal-world data is crucial to inform existing opportunistic colorectal cancer (CRC) prevention programs. This study aimed to assess CRC screening adherence and utilization of various screening modalities within a Primary Care network over a three-year period (2017-2019).MethodsA retrospective review of individuals aged 50-75 years at average CRC risk, with at least one clinic visit in the previous 24 months. The primary outcome, CRC screening adherence (overall and by modality) was examined among the entire eligible population and newly adherent individuals each calendar year. The final sample included 107,366 patients and 218,878 records.ResultsOverall CRC screening adherence increased from 71% in 2017 to 78% in 2019. For "up-to-date" individuals, colonoscopy was the predominant modality (accounting for approximately 74%, versus 4% of adherence for non-invasive options). However, modality utilization trends changed over time in these individuals: mt-sDNA increased 10.2-fold, followed by FIT (1.6-fold) and colonoscopy (1.1-fold). Among newly adherent individuals, the proportion screened by colonoscopy and FOBT decreased over time (89% to 80% and 2.4% to 1.2%, respectively), while uptake of FIT and mt-sDNA increased (7.7% to 11.5% and 0.9% to 6.8%, respectively). Notably, FIT and mt-sDNA increases were most evident in age and race-ethnicity groups with the lowest screening rates.ConclusionsIn an opportunistic CRC screening program, adherence increased but remained below the national 80% goal. While colonoscopy remained the most utilized modality, new colonoscopy uptake declined, compared with rising mt-sDNA and FIT utilization. Among minority populations, new uptake increased most with mt-sDNA and FIT.

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