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Quantitative comparison of human computer interaction for direct prescription entry systems
1Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto, JAPAN.
Medinfo. MEDINFO
|January 1, 1995
Summary
This study introduces a new objective method to evaluate human-computer interaction in electronic prescribing systems. The GOMS model-based approach quantitatively measured differences between three hospital interfaces.
Area of Science:
- Human-Computer Interaction
- Health Informatics
- Usability Engineering
Background:
- Evaluating user interfaces in healthcare systems is crucial for safe and efficient clinical workflows.
- Direct prescription entry systems require robust usability to minimize errors.
- Existing evaluation methods may lack objectivity and quantitative rigor.
Purpose of the Study:
- To present an objective and quantitative method for evaluating human-computer interaction in direct prescription entry systems.
- To apply this method to compare different interfaces in a real-world clinical setting.
Main Methods:
- Development of an evaluation method based on the Goals, Operators, Methods, and Selection (GOMS) model.
- Representation of the GOMS model using a tree structure for systematic analysis.
- Application of the method to compare three distinct interfaces at university hospitals.
Main Results:
- The GOMS-based method provided objective and quantitative measurements of interface performance.
- Significant differences in human-computer interaction were identified among the three evaluated interfaces.
- The tree structure effectively represented the complex interactions within the systems.
Conclusions:
- The proposed GOMS model-based method offers a reliable approach for evaluating direct prescription entry system interfaces.
- Quantitative interface evaluation is essential for optimizing usability and potentially reducing medical errors.
- This methodology can inform the design and selection of more effective healthcare IT systems.