 In reality little is known about the quality of colonoscopy in Denmark or in our region of North Jutland. There is no systematic collection of quality data on the national or regional level, endoscopy unit level or individual surgeon level. Data from the population screening programme will cover a few of the potential points, but a much more detailed data acquisition is necessary in order to ascertain if our service is up to international standards. This is not only of theoretical interest, as the endoscopy service quality or lack thereof will determine if the screening programme is effective or whether it is actually detrimental to the population. 