IRCT20161116030926N3 IRCT 2018-11-28 Oroumia University of Medical Sciences The effect of education with educational film and visual aid cards on the bowel preparation and satisfaction in patients under colonoscopy The effect of combined education through educational film and visual aid cards on the quality of bowel preparation and satisfaction in patients under colonoscopy that referring to Imam Khomeini educational and treatment center of Urmia in 2018 2018-11-16 anticipated 180 Complete https://irct.ir/trial/35128 interventional Randomization: Not randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Other, Purpose: Education/Guidance, Blinding description: The gastroenterologist who performs the colonoscopy of both groups is unaware of both the intervention and control groups. N/A Bowel preparation. Intervention 1: The intervention group receives training on bowel preparation through video cards and educational videos and researcher descriptions at least two days before colonoscopy. These cards contain good and bad preparation pictures, as well as complications of inadequate bowel preparation and the use of polyethylene glycol. Intervention 2: Control group: The control group will receive all tutorials other than video and video cards. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information