Colonoscopy Educational Video Upon Inner City Population


Background: The investigators assessed the use of a colonoscopy instructional video to improve both bowel preparation and education prior to procedure. Preceding studies have been vague, pinning patient education via diagrams and text as both pivotal and useless for compliance in bowel preparations. These studies however lacked assessment of comprehension prior to procedure. Methodology: This is a prospective study of diverse, inner city outpatient university center, first time colonoscopy patients given 1 of 2 on-site videos and written/verbal instruction. Experimentals saw a 5 min video on the purpose of colonoscopy, bowel preparation, pre-colonoscopy diet, and proper laxative use. Controls saw a 5 min video from the same spokesperson on upper endoscopy; which was trivial. Both groups were given a quiz within 30 days of the colonoscopy on demographics, and 14 test questions about colonoscopy and preparation. Subsequently, endoscopists used the additive Ottawa scale to rate quality of preparation (range 0-14) via: fluid (0=sm,1=mod, 2=lg) and cleanliness in each the right, mid and rectosigmoid colon, (0=excellent, 1=good, 2=fair, 3=poor, 4=inadequate).

Full Title of Study: “Educational Colonoscopy Video Enhances Bowel Preparation Quality and Comprehension in an Inner City Population”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Masking: Single (Investigator)
  • Study Primary Completion Date: March 2013


  • Other: Colonoscopy Educational Video
    • Brief Video utilization to assess comprehension and evaluation bowel preparation quality
  • Other: Placebo Educational Video
    • Brief Video utilization to provide placebo information and evaluation bowel preparation quality

Arms, Groups and Cohorts

  • Experimental: Colonoscopy educational Video
    • Brief educational video of colonoscopy to determine comprehension and quality of bowel preparation.
  • Placebo Comparator: Control
    • Non-colonoscopy video as a control.

Clinical Trial Outcome Measures

Primary Measures

  • Primary outcome improvement in adequate bowel preparations
    • Time Frame: in 30 days retention from the video
    • Bowel preparation quality indicator using Ottawa bowel prep scale.
  • Comprehension of colonoscopy/colorectal cancer screening
    • Time Frame: in 30 days retention from the video
    • Questionnaire

Participating in This Clinical Trial

Exclusion Criteria

  • Patients were excluded if they had dementia or – cognitive impairment or – if they did not have a pre-procedural office visit. Inclusion Criteria:

  • age 18-85 – undergoing initial outpatient colonoscopy – willing to participate in and sign consent for this study – Morning session of colonoscopy procedure

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 65 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Drexel University
  • Provider of Information About this Clinical Study
    • Sponsor


Rex DK, Imperiale TF, Latinovich DR, Bratcher LL. Impact of bowel preparation on efficiency and cost of colonoscopy. Am J Gastroenterol. 2002 Jul;97(7):1696-700.

Spiegel BM, Talley J, Shekelle P, Agarwal N, Snyder B, Bolus R, Kurzbard N, Chan M, Ho A, Kaneshiro M, Cordasco K, Cohen H. Development and validation of a novel patient educational booklet to enhance colonoscopy preparation. Am J Gastroenterol. 2011 May;106(5):875-83. doi: 10.1038/ajg.2011.75. Epub 2011 Apr 12.

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