Evaluation of the Main Determinants of Patient Acceptability of the Bowel Cleansing Procedure, and of Success of Bowel Cleansing and Caecal Intubation

Inclusion Criteria: * Written informed consent obtained prior to inclusion. * Male and female outpatients, aged ≥ 18, treated with bowel cleansing preparation the day before undergoing routine colonoscopy at selected participating centres. Exclusion Criteria: * Children and adolescents aged less than 18 years. Pregnant or breastfeeding women. * Listed contra-indications to the relevant product used for the bowel cleansing procedure. * Patients having been submitted to a previous colonoscopy over the last five years. * Patients who have taken laxative enemas the day preceding the colonoscopy.