A usability study of the PubMed on Tap user interface for PDAs

Area of Science:

• Medical Informatics
• Human-Computer Interaction
• Usability Engineering

Background:

• Healthcare providers face challenges accessing timely and accurate medical information at the point of care.
• Effective information retrieval is crucial for clinical decision-making and patient outcomes.

Purpose of the Study:

• To identify and implement design principles for enhancing healthcare practitioners' access to medical information at the point-of-care.
• To evaluate the usability of the PubMed on Tap prototype for personal digital assistants (PDAs).

Main Methods:

• Development of a PubMed on Tap prototype on PDAs as a testbed for design principles.
• Conducting usability testing with 323 participant events to assess functionality and navigation.
• Analyzing participant events focusing on navigational ability and perceived functionality.

Main Results:

• A strong correlation (r=0.87) was found between total time spent and negative usability events.
• Participant events predominantly involved issues with navigation (31%) and perceived functionality (33%).
• The basic functionality of the PubMed on Tap interface was deemed valuable by users.

Conclusions:

• The PubMed on Tap prototype demonstrates potential for improving point-of-care information access.
• Improvements in navigational elements and functional characteristics, such as icon labeling, are necessary.
• Further refinement of the user interface is recommended to optimize usability for healthcare practitioners.