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A pragmatic randomized trial of mailed fecal immunochemical testing to increase colorectal cancer screening among low‐income and minoritized populations

Authors
  • Martínez, María Elena
  • Roesch, Scott
  • Largaespada, Valesca
  • Castañeda, Sheila F
  • Nodora, Jesse N
  • Rabin, Borsika A
  • Covin, Jennifer
  • Ortwine, Kristine
  • Preciado‐Hidalgo, Yesenia
  • Howard, Nicole
  • Schultz, James
  • Stamm, Nannette
  • Ramirez, Daniel
  • Halpern, Michael T
  • Gupta, Samir
Publication Date
Sep 15, 2024
Source
eScholarship - University of California
Keywords
License
Unknown
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Abstract

BackgroundColorectal cancer (CRC) screening is underused, particularly among low-income and minoritized populations, for whom the coronavirus disease 2019 (COVID-19) pandemic has challenged progress in achieving equity.MethodsA hub-and-spoke model was used. The hub was a nonacademic organization and the spokes were three community health center (CHC) systems overseeing numerous clinic sites. Via a cluster-randomized trial design, nine clinic sites were randomized to intervention and 16 clinic sites were randomized to usual care. Patient-level interventions included invitation letters, mailed fecal immunochemical tests (FITs), and call/text-based reminders. Year 1 intervention impact, which took place during the COVID-19 pandemic, was assessed as the proportion completing screening among individuals not up to date at baseline, which compared intervention and nonintervention clinics accounting for intraclinic cluster variation; confidence intervals (CIs) around differences not including 0 were interpreted as statistically significant.ResultsAmong 26,736 patients who met eligibility criteria, approximately 58% were female, 55% were Hispanic individuals, and 44% were Spanish speaking. The proportion completing screening was 11.5 percentage points (ppts) (95% CI, 6.1-16.9 ppts) higher in intervention versus usual care clinics. Variation in differences between intervention and usual care clinics was observed by sex (12.6 ppts [95% CI, 7.2-18.0 ppts] for females; 8.8 ppts [95% CI, 4.7-13.9 ppts] for males) and by racial and ethnic group (13.8 ppts [95% CI, 7.0-20.6 ppts] for Hispanic individuals; 13.0 ppts [95% CI, 3.6-22.4 ppts] for Asian individuals; 11.3 ppts [95% CI, 5.8-16.8 ppts] for non-Hispanic White individuals; 6.1 ppts [95% CI, 0.8-10.4 ppts] for Black individuals).ConclusionsA regional mailed FIT intervention was effective for increasing CRC screening rates across CHC systems serving diverse, low-income populations.

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