Related Experiment Video
Updated: Jan 31, 2026
08:43
Orthotopic Mouse Model of Colorectal Cancer
Published on: December 4, 2007
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Testing behavioral interventions to optimize participation in a population-based colorectal cancer screening program
S Stoffel1, L Benito2, N Milà3
1Research Department of Behavioural Science and Health, University College London, London, UK.
Preventive Medicine
|December 31, 2018
Summary
A reminder letter significantly increased colorectal cancer (CRC) screening participation by 8%. However, behavioral interventions like social norms or benefit messaging did not improve CRC screening rates and may even discourage newly invited individuals.
Area of Science:
- Public Health
- Behavioral Science
- Cancer Screening
Background:
- Population-based colorectal cancer (CRC) screening programs aim to reduce cancer mortality.
- Understanding effective strategies to increase screening participation is crucial for public health initiatives.
- Behavioral interventions are explored as cost-neutral methods to boost engagement in CRC screening.
Purpose of the Study:
- To evaluate the impact of three cost-neutral behavioral interventions on participation in a population-based CRC screening program.
- To compare intervention effectiveness against a standard invitation letter and a reminder letter.
- To analyze intervention effects on both previously and newly invited individuals.
Main Methods:
- A four-arm randomized controlled trial involving 5077 individuals aged 50-69 years.
- Interventions included prompts for scheduling, social norms messaging, and benefit messaging within invitation letters.
- Screening participation was measured before and after a reminder letter was sent six weeks post-invitation.
Main Results:
- A reminder letter independently increased CRC screening participation by 8.0 percentage points.
- None of the tested behavioral interventions (social norms, benefit messaging, scheduling prompts) significantly influenced overall participation rates.
- For newly invited individuals, emphasizing the importance of regular participation (benefit condition) led to a decrease in screening rates (OR: 0.60).
Conclusions:
- While reminder letters are effective in boosting CRC screening, the tested behavioral interventions showed no benefit.
- Highlighting the benefits of regular screening may inadvertently discourage individuals new to the screening program.
- Further research is needed to identify effective, scalable interventions for increasing CRC screening participation.
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