Impact of an educational video-based strategy on the behavior process associated with colorectal cancer screening: a randomized controlled study

Cancer Epidemiol. 2009 Oct;33(3-4):216-22. doi: 10.1016/j.canep.2009.08.003. Epub 2009 Sep 10.


Background: Low public awareness is an important barrier for colorectal cancer screening participation.

Aim: To evaluate the impact of educational intervention on the health behavior process, patient knowledge and compliance with colorectal cancer screening in the average-risk population.

Methods: 158 subjects (aged 50-79 years) were randomly assigned either to watch a non-medical video or a colorectal cancer educational video. Before and after watching the experimental or control videotape, participants completed a five-item questionnaire that assessed their knowledge about risk factors for colorectal cancer, age of risk, warning symptoms, 5-year prognosis, and incidence. Subjective risk perception for developing colorectal cancer, barriers or benefits of screening, and intention to be screened were also investigated. Finally, subjects received a faecal occult blood test kit and were requested to use and return it within 2 weeks.

Results: Participants in the video-based intervention group showed significant improvement in knowledge of colorectal cancer scores (P<0.001) and decreased barrier scores. The intervention group returned significantly more faecal occult blood tests than controls (69.6% vs. 54.4%, P=0.035). The intervention had a positive effect on modifying attitudes and intention to take part in screening. Additionally, the intervention was a predictor of compliance (OR 2.0; 95% CI=1.02-3.84, P=0.044).

Conclusion: Video-based intervention significantly reduced barriers to screening and improved participant awareness and compliance with colorectal cancer screening with faecal occult blood test.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Attitude to Health
  • Audiovisual Aids
  • Colorectal Neoplasms / diagnosis*
  • Female
  • Health Behavior*
  • Health Knowledge, Attitudes, Practice*
  • Humans
  • Male
  • Mass Screening / methods*
  • Middle Aged
  • Occult Blood
  • Patient Education as Topic / methods
  • Risk Factors
  • Videotape Recording