Using decision tree models to depict primary care physicians CRC screening decision heuristics

Area of Science:

• Medical Decision Making
• Health Services Research
• Oncology

Background:

• Colorectal cancer screening is crucial for early detection and prevention.
• Primary care physicians play a key role in guiding patients on screening recommendations.
• Understanding physician decision-making processes can inform quality improvement initiatives.

Purpose of the Study:

• To identify the specific decision heuristics used by primary care physicians for colorectal cancer screening recommendations.
• To analyze the criteria physicians employ when determining screening timing and type.

Main Methods:

• Qualitative study employing in-depth, semi-structured interviews with 66 primary care physicians.
• Analysis of interview transcripts using constant comparative methodology to develop decision trees.
• Independent review by three researchers to ensure reliability of identified heuristics.

Main Results:

• Physicians utilized four distinct heuristics for screening timing (e.g., "age 50," "age 50 with family history adjustments").
• Five heuristics were identified for screening type selection (e.g., fecal occult blood test, colonoscopy, combination).
• No association was found between the heuristics used for timing and those used for screening type.

Conclusions:

• Evidence confirms the use of heuristics in colorectal cancer screening recommendations by primary care physicians.
• Further research is necessary to evaluate the impact of these heuristics on the quality of cancer care.
• Identifying these decision patterns is a step towards optimizing screening strategies.