 Each Colonoscopy is registered using a specially designed registration form and a more detailed form relating to the colonoscopy itself. The data collected includes: Endoscopy experience and education, Medicine use, Colonoscopy duration, Caecum Intubations rate and documentation, Polyp detection rate, Polyps removed, Cancer detection rate and Nurse assisted Gloucester Comfort score. Each patient were given a questionaire with 6 questions answering satisfaction, pain, discomfort etc on a 10 cm analog scale. 