Postpolypectomy Colonoscopy Surveillance Guidelines: Predictive Accuracy for Advanced Adenoma at 4 Years

Established in 1927 by the American College of Physicians

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Postpolypectomy Colonoscopy Surveillance Guidelines: Predictive Accuracy for Advanced Adenoma at 4 Years

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Figure. Study flow diagram for the Polyp Prevention Trial (PPT).

One hundred seventy-four patients did not complete the trial. Four patients were excluded late (no baseline adenoma), 88 died before the end of the trial (from causes unrelated to the trial), and 82 withdrew (72 did not have follow-up colonoscopy, 9 declined to participate, and 1 withdrew because of ill health).

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Appendix Table. Comparison of the Polyp Prevention Trial Participants: Completers versus Noncompleters ${webonly}$

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Table 1. Selected Baseline Characteristics of Participants in the Polyp Prevention Trial

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Table 2. Association of Adenoma Characteristics at Baseline with Advanced Adenoma Recurrence in 4 Years

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Table 3. Multivariable Model for Advanced Adenoma Recurrence with All Adenoma Characteristics in the Same Model

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Table 4. Effect of Location of Advanced Adenoma Recurrence among Participants with 1 or 2 Low-Risk Adenomas at Baseline