• Matthew A Goldshore, Shivan J Mehta, Woodrow Fletcher, George Tzanis, Chyke A Doubeni, and E Carter Paulson.
• Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania; Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: matthew.goldshore@pennmedicine.upenn.edu.
• Am J Prev Med. 2020 Jul 1; 59 (1): 41-48.

IntroductionThe use of screening can prevent death from colorectal cancer, yet people without regular healthcare visits may not realize the benefits of this preventive intervention. The objective of this study was to determine the effectiveness of a mailed screening invitation or mailed fecal immunochemical test in increasing colorectal cancer screening uptake in veterans without recent primary care encounters.Study DesignThree-arm pragmatic randomized trial.Setting/ParticipantsParticipants were screening-eligible veterans aged 50-75 years, without a recent primary care visit who accessed medical services at the Corporal Michael J. Crescenz Veteran Affairs Medical Center between January 1, 2017, and July 31, 2017. All data were analyzed from March 1, 2018, to July 31, 2018.InterventionParticipants were randomized to (1) usual opportunistic screening during a healthcare visit (n=260), (2) mailed invitation to screen and reminder phone calls (n=261), or (3) mailed fecal immunochemical test outreach plus reminder calls (n=61).Main Outcome MeasuresThe main outcome under investigation was the completion of colorectal cancer screening within 6 months after randomization.ResultsOf 782 participants in the trial, 53.9% were aged 60-75 years and 59.7% were African American. The screening rate was higher in the mailed fecal immunochemical test group (26.1%) compared with usual care (5.8%) (rate difference=20.3%, 95% CI=14.3%, 26.3%; RR=4.52, 95% CI=2.7, 7.7) or screening invitation (7.7%) (rate difference=18.4%, 95% CI=12.2%, 24.6%; RR=3.4, 95% CI=2.1, 5.4). Screening completion rates were similar between invitation and usual care (rate difference=1.9%, 95% CI= -2.4%, 6.2%; RR=1.3, 95% CI=0.7, 2.5).ConclusionsMailed fecal immunochemical test screening promotes colorectal cancer screening participation among veterans without a recent primary care encounter. Despite the addition of reminder calls, an invitation letter was no more effective in screening participation than screening during outpatient appointments.Trial RegistrationThis study is registered at clinicaltrials.gov NCT02584998.Copyright © 2020. Published by Elsevier Inc.

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