Colonoscopy Decision Aid for Older Adults

Colonoscopy Decision Aid for Older Adults

Elderly patients with prior adenomas face very low absolute colorectal cancer risk relative to competing mortality risks — yet surveillance colonoscopy is still widely recommended as routine, even in patients where the procedure's risks and burdens may outweigh realistic cancer prevention benefits.

Build a shared decision-making tool for elderly patients and their physicians to evaluate whether surveillance colonoscopy after prior adenoma is likely to be beneficial for that specific individual. The tool would take inputs including patient age, comorbidity burden (Charlson score or simplified version), prior adenoma characteristics (size, number, histology), and time since last colonoscopy, then present personalized information about absolute colorectal cancer risk, colonoscopy procedure risks at their age, estimated life-expectancy context, and how these balance.

The output would not be a binary 'yes/no' recommendation but a structured summary of tradeoffs presented in natural language and visual formats (icon arrays, frequency charts) that support an informed conversation between patient and clinician. The tool would include links to relevant guidelines, shared decision-making frameworks, and prompts for conversation with a gastroenterologist.

This addresses a real gap in clinical practice: guidelines are moving toward individualized surveillance intervals, but clinicians and patients lack accessible tools to operationalize this. Many elderly patients undergo colonoscopies that carry real procedural risks (perforation, cardiovascular events, sedation complications) for marginal absolute cancer-prevention benefit. A well-designed decision aid could meaningfully reduce unnecessary procedures while ensuring that high-risk elderly patients still get appropriate surveillance.

Who Is This For?

Primary care physicians counseling elderly patients with prior adenomas, gastroenterologists reviewing surveillance schedules, and patients aged 70+ who want to understand whether continued colonoscopy makes sense.

Skills & Tools Needed

• Medical knowledge (colorectal cancer epidemiology, colonoscopy risk data)
• Health decision aid design methodology (IPDAS standards)
• Web development with form and calculation logic
• Data visualization for risk communication (icon arrays, natural frequencies)
• User testing with elderly patients and primary care physicians

Feasibility

medium — Building a validated, guideline-aligned decision aid requires careful medical content review and user testing, but the underlying epidemiological data exists and the tool concept is straightforward.

Inspired by: Is Surveillance Colonoscopy Needed for Elderly Patients With Adenomas?