Measuring bowel preparation adequacy in colonoscopy-based research: review of key considerations

Published:September 27, 2019DOI:
      An assessment of bowel cleanliness is an important variable in colonoscopy-based research. Bowel preparation adequacy will be the primary endpoint in any study comparing bowel purgatives, dietary manipulations in the days leading up to colonoscopy, or devices for intraprocedural washing. A recent search of yielded more than 300 studies of bowel preparation for colonoscopy. Bowel preparation adequacy may also be a covariate in studies comparing other outcomes, such as rates of adenoma detection or cecal intubation. Investigators should carefully consider several factors when designing a study that will include bowel preparation adequacy as a variable.


      BBPS (Boston Bowel Preparation Scale), OBPQS (Ottawa Bowel Preparation Quality Scale)
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