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Figure 1. Consolidated Standards of Reporting Trials (CONSORT) diagram. FOBT indicates fecal occult blood testing.

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Figure 2. Completion rates by study arm. Participants recommended colonoscopy completed screening at a significantly lower rate than participants recommended fecal occult blood testing (FOBT) or a choice between colonoscopy or FOBT. The level of statistical significance was reduced to .01 to adjust for multiple comparisons.

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Figure 3. Adherence by study arm and race/ethnicity. Among participants offered a choice of screening tests, white participants adhered more often to colonoscopy than nonwhite participants (odds ratio [OR], 3.2; 95% CI, 1.7-6.1), and less often to fecal occult blood testing (FOBT) (OR, 0.3; 95% CI, 0.1-0.6). Among participants offered FOBT, Asians (OR, 2.6; 95% CI, 1.2-5.3) and Latinos (OR, 2.1; 95% CI, 1.0-4.2) adhered more often than whites.

Table 1. Baseline Sociodemographic Characteristics of the Participants by Study Arm
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Table 2. Adherence to Colorectal Cancer Screening Strategiesa
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Original Investigation
Apr 9, 2012

Adherence to Colorectal Cancer ScreeningA Randomized Clinical Trial of Competing Strategies

Author Affiliations

Author Affiliations: Division of Gastroenterology, Department of Medicine, University of Washington, Seattle (Dr Inadomi); GI Health Outcomes, Policy and Economics (HOPE) Research Program, Department of Medicine, University of California, San Francisco (Drs Inadomi, Somsouk, and El-Nachef and Mss Thomas, Lin, Muñoz, and Lau); Division of Gastroenterology, San Francisco General Hospital, San Francisco (Drs Inadomi, Somsouk, and El-Nachef and Mss Thomas, Lin, Muñoz, and Lau); Department of Veteran Affairs Ann Arbor Health Services Research and Development Center of Excellence, Ann Arbor, Michigan (Drs Vijan, Fagerlin, and Hayward); and Department of Medicine (Drs Vijan, Fagerlin, and Hayward) and School of Public Health (Dr Janz), University of Michigan, Ann Arbor.

Arch Intern Med. 2012;172(7):575-582. doi:10.1001/archinternmed.2012.332