Background – Evaluation of Use• Nielsen’s Heuristics • 10 Usability principles• Aerospace and Automotive Industry• NASA• Healthcare - Context of Use• Pilot
Method• Pilot Study• Two House Officers + Two Wards (1 each) • Ward A: 18 Long-Stay Elderly Patients with HIGH Dependency Scores • Ward B: 10 Short-Stay Patients, Respite Care with Lower Dependency Scores than Ward A• Questionnaire on use of EPR – over 5 days • Nielsens’s Heuristics & NASA-TLX• Analysis
Nielsen’s Heuristics• Feedback • Minimise User Memory Load• Speak User’s Language • Shortcuts• Clearly marked exits • Simple Dialogue• Consistency • Good Error Messages• Prevent Errors • Help and Documentation
Results - Interpretation• Usability of EHR can vary over time• As clinicians approach the end of their working day, performance dramatically declines• As a result of Decreased Performance, more Effort needed• Usability Evaluation methods in Healthcare should be more refined to give better information
Conclusion• Nielsen’s Principles, while helpful, do not take into account • Context of System Use • Impact of User’s Mental Workload• Human Factors should be incorporated into System Evaluation in Healthcare• More Research is needed into task issues in healthcare and usability
ReferenceL. Longo and B. Kane, 2011,A Novel Methodology for Evaluating User Interfaces in Health CarePages 1-6, 24th IEEE International Symposium on Computer-Based Medical Systems (CBMS), Bristol, EnglandDOI 10.1109/CBMS.2011.5999024
Acknowlegements• R. T. Venkateshappa, R. Ravikuma and K. Nagesh for helping in gathering data.• B. Kane is funded through the IRCSET Enterprise Partnership scheme with St. James’s Hospital Board, Dublin• St James’s Hospital Board
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