Effect of ambient temperature on quality of bowel preparation for colonoscopy

Interventions: This trial is a secondary analysis of existing data collected as part of a previous prospective trial investigating the efficacy and tolerability of different bowel preparations in both inflammatory bowel disease patients and the general population.
In the original trial, patients were randomised to two different types of bowel preparation (Moviprep or Prep Kit C).
We added ambient temperature as the minimum and maximum temperature documented by the local Bureau of Meteorology weather observation station on the day prior to the scheduled colonoscopy.
No additional participant involvement was required.
Primary outcome(s): Quality of bowel preparation as determined using the validated Ottawa Bowel Preparation Score. This grades the quality of bowel preparation from 0 to 4 (with 0 being no fluid and 4 pertaining to fluid/faecal material unable to be cleared) in three colonic segments (right, left and rectosigmoid) to reach a total score out of 14. All endoscopists attended calibrating sessions prior to study commencement. Two endoscopists assessed the efficacy of bowel cleansing regime independently at the time of the procedure. An average score was then calculated. Inadequate bowel preparation is defined as an Ottawa Bowel Preparation Score equal to or greater than 8.[At time of colonoscopy. ]