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Postpolypectomy Colonoscopy Surveillance Guidelines: Predictive Accuracy for Advanced Adenoma at 4 Years
- Adeyinka O. Laiyemo, MD, MPH;
- Gwen Murphy, PhD, MPH;
- Paul S. Albert, PhD;
- Leah B. Sansbury, PhD;
- Zhuoqiao Wang, MS;
- Amanda J. Cross, PhD;
- Pamela M. Marcus, PhD;
- Bette Caan, DrPH;
- James R. Marshall, PhD;
- Peter Lance, MD;
- Electra D. Paskett, PhD;
- Joel Weissfeld, MD, MPH;
- Martha L. Slattery, PhD;
- Randall Burt, MD;
- Frank Iber, MD;
- Moshe Shike, MD;
- J. Walter Kikendall, MD;
- Elaine Lanza, PhD; and
- Arthur Schatzkin, MD, DrPH
- From the National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Information Management Services, Rockville, Maryland; Kaiser Foundation Research Institute, Oakland, California; Roswell Park Cancer Institute, Buffalo, New York; Arizona Cancer Center, Tucson, Arizona; Ohio State University Comprehensive Cancer Center, Columbus, Ohio; University of Pittsburgh, Pittsburgh, Pennsylvania; University of Utah, Salt Lake City, Utah; Edward Hines Jr. Hospital Veterans Affairs Medical Center, Hines, Illinois; Memorial Sloan-Kettering Cancer Center, New York, New York; and Walter Reed Army Medical Center, Washington, DC.
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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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