Bowel Preparation for Colonoscopy Among Individuals With Crohn's and Ulcerative Colitis Disease.

The primary outcome will be adequate quality of bowel cleanliness. Proportion with adequate cleansing will be measured by Boston Bowel Preparation Scale Score ≥2 in all segments.

The primary outcome will be adequate quality of bowel cleanliness. Proportion with adequate cleansing will be measured by the Ottawa scale score as a binary adequate/inadequate score (≤7) will be recorded.

Will compare completion of laxative intake.

Will compare dysplasia detection rate.

Will compare withdrawal time.

Will compare total procedure time.

Will compare cecal intubation rate

Will determine the proportion of patients in each group reporting: use of split dose and day before bowel preparation (even though they were prescribed split-dose) , incontinence episodes during bowel preparation and during travel to the colonoscopy appointment; total duration of sleep; number of nocturnal awakenings: patient willingness to repeat colonoscopy using the same preparation; pre-colonoscopy anxiety rating; difficulty with bowel preparation rating. The study specific patient questionnaire will be administered prior to the colonoscopy to avoid any contamination by the experience of the colonoscopy.

A one month phone call to determine diagnosed flares within a month

Will also compare the proportion of patients requiring repeat colonoscopy because of an inadequate bowel preparation. Will collect data on mucosal abnormality suspected by endoscopist to be due to bowel preparation.