A Veteran-Centric Web-Based Decision Aid for Lung Cancer Screening: Usability Analysis

Area of Science:

• Health Informatics
• Public Health
• Oncology

Background:

• Web-based tools can facilitate shared decision-making (SDM) for lung cancer screening (LCS).
• Veterans have unique risk factors and experiences influencing LCS benefits and harms.
• A veteran-centric LCS decision tool (LCSDecTool) may enhance LCS implementation in this population.

Purpose of the Study:

• To conduct usability testing of a veteran-specific LCS decision tool (LCSDecTool).
• To evaluate the LCSDecTool's effectiveness in informing veterans about LCS and preparing them for SDM.

Main Methods:

• Usability testing of a prototype (Phase 1) and high-fidelity (Phase 2) LCSDecTool.
• Involved 18 veterans and 8 clinicians in Phase 1; 43 veterans in Phase 2.
• Collected quantitative (SUS, EUCS, Patient Engagement) and qualitative data.

Main Results:

• Phase 1 prototype showed excellent usability (SUS: 81.90).
• Phase 2 high-fidelity tool showed good usability (SUS: 65.76), improving LCS awareness and engagement.
• Users found the tool easy to use but desired more detail and clearer medical terminology.

Conclusions:

• The LCSDecTool shows promise for engaging veterans in LCS.
• This eHealth technology can inform veterans and prepare them for SDM discussions.
• Supports the use of veteran-centric eHealth tools in primary care for cancer screening.