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 developed by this task force is the Adenoma Detection Rate (ADR). The Adenoma Detection Rate represents the number of patients with no prior symptoms in whom a precancerous polyp is identified and removed during a colonoscopy.
The task force has established that a high quality screening colonoscopy program should identify and remove adenomas in 20% of women and 30% of men. This quality standard is also referred to as the National Benchmark.
Springfield Clinic’s Department of Gastroenterology conducted a review of more than 60% of its qualifying cases performed in 2013 to measure its quality against the National Benchmark. The study found that Springfield Clinic’s gastroenterologists achieved a group ADR of 40% in women and 46% in men, both far exceeding the National Benchmark.
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.