Variation in Detection of Adenomas and Polyps by Colonoscopy and Change Over Time With a Performance Improvement Program  Aasma Shaukat, Cristina Oancea, John H. Bond, Timothy R. Church, John I. Allen  Clinical Gastroenterology and Hepatology  Volume 7, Issue 12, Pages 1335-1340 (December 2009) DOI: 10.1016/j.cgh.2009.07.027 Copyright © 2009 AGA Institute Terms and Conditions

Figure 1 Patterns of detection of adenoma during the 3 years plotted for individual physicians adjusted for age, sex, and adequate preparation quality, which are split in 4 panes by quartiles of procedure volume for ease of viewing. Each line represents one physician. The quartile cutoffs were as follows: (A) 100–870 colonoscopies during study duration, (B) 871–1140 colonoscopies during study duration, (C) 1141–1335 colonoscopies over study duration, and (D) more than 1335 colonoscopies during study duration. Green arrows: adenoma detection rates for individual physicians were presented at a group retreat. Blue arrows: physicians received their own adenoma detection rate, with benchmarking to the group as a whole and published data. Red arrows: physician names were attached to adenoma detection rates, and these unblinded data were discussed at group meeting. Yellow arrows: letters sent to all physicians in practice with unblinded adenoma detection rates, and personal discussion with practice leaders and individual physicians were held. Clinical Gastroenterology and Hepatology 2009 7, 1335-1340DOI: (10.1016/j.cgh.2009.07.027) Copyright © 2009 AGA Institute Terms and Conditions