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Improving Bowel Preparation for Colonoscopy With a Simple Educational Card

18 Years
Not Enrolling
Colonic Polyps, Colonic Neoplasms

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Trial Information

Improving Bowel Preparation for Colonoscopy With a Simple Educational Card

Despite written instructions, many patients do not understand the importance of bowel
preparation as they prepare for colonoscopy. This often leads to poor compliance with
preparation protocol and therefore inadequate bowel preparation. Our goal is to include a
simple educational card which will hopefully improve the quality of bowel preparation by
providing a visual component with the preparation instructions. This card will stress the
importance of drinking the entire bowel preparation and provide representative images of a
dirty and clean colon. We will specifically target patients directly booked for screening
colonoscopy (those without a pre-procedure office visit). In a randomized fashion, patients
in the control group will receive the standard bowel preparation instructions and patients
in the intervention group will receive the educational card along with the standard bowel
preparation instructions. The primary outcome will be the endoscopist's assessment of the
quality of preparation using a standardized bowel preparation scale. Secondary outcomes will
include the number and types of polyps found, colonoscope insertion and withdrawal time, and
patient satisfaction with the procedure.

Inclusion Criteria:

- Outpatients

- 18 years old or older

- Referred and scheduled for an elective screening colonoscopy

Exclusion Criteria:

- Inpatients

- Prisoners

- Cognitively impaired patients

- Legally blind patients

- Patients allergic to polyethylene glycol electrolyte lavage solution

Type of Study:


Study Design:

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment

Outcome Measure:

Boston Bowel Preparation Scale Score

Outcome Description:

An ordinal scale. 0=fully unprepared colon and 9=perfectly clean colon. Higher values represent a better outcome. For reference please see: Lai EJ, Calderwood AH, Doros G, Fix OK, Jacobson BC. The Boston bowel preparation scale: a valid and reliable instrument for colonoscopy-oriented research. Gastrointestinal Endoscopy 2009;69:620-625. PMCID: PMC2763922

Outcome Time Frame:

2 years

Safety Issue:


Principal Investigator

Brian C Jacobson, MD, MPH

Investigator Role:

Principal Investigator

Investigator Affiliation:

Boston University


United States: Institutional Review Board

Study ID:




Start Date:

February 2006

Completion Date:

October 2009

Related Keywords:

  • Colonic Polyps
  • Colonic Neoplasms
  • colonoscopy
  • bowel preparation
  • patient education
  • polyp detection
  • Neoplasms
  • Colonic Neoplasms
  • Colonic Polyps
  • Polyps



Boston University Medical Center Boston, Massachusetts  02118