The percentage of patients aged 50 to 75 years with at least one conventional adenoma or colorectal cancer detected during screening colonoscopy. This measure will be calculated with 3 performance rates: Rate 1: Overall percentage of patients aged 50 to 75 years with at least one conventional adenoma or colorectal cancer detected during screening colonoscopy Rate 2: Percentage of male patients aged 50 to 75 years with at least one conventional adenoma or colorectal cancer detected during screening colonoscopy Rate 3: Percentage of female patients aged 50 to 75 years with at least one conventional adenoma or colorectal cancer detected during screening colonoscopy