Adenoma Detection Rate
Experts from The American Society for Gastrointestinal Endoscopy (ASGE) and the American College of Gastroenterology (ACG) have established benchmark quality measures that physicians should aim to achieve before, during, and after a colonoscopy procedure.
One of the most important quality indicators is the Adenoma Detection Rate (ADR). The Adenoma Detection Rate represents the percentage of patients receiving a screening colonoscopy (having no symptoms and no prior history of polyps), in whom a precancerous polyp is identified and removed during the colonoscopy.
The ASGE and ACG have established that a high quality screening colonoscopy program should identify and remove adenomas in at least 20% of women and at least 30% of men. This quality standard is also referred to as the National Benchmark.
Springfield Clinic’s Department of Gastroenterology’s most recent audit for their ADR in screening colonoscopies performed from March 1, 2015 through December 31, 2016 revealed an Adenoma Detection Rate of 49% which far exceeds the National Benchmark of 25%. Furthermore their ADR for Male ADR - 55% and Female ADR - 44% again surpassing the National Benchmark of 30% and 20% respectively. While the Adenoma Detection Rate and other quality measures help provide a standard means of comparison, the greater value is the relationship between ADR and improved patient health outcomes.
A study, published by the New England Journal of Medicine in April 2014, determined that each 1% increase in the adenoma detection rate was associated with a 3% decrease in the risk of a colorectal cancer.