| Effect of predefined order sets and usability problems on efficiency of computerized medication ordering. | |
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MedLine Citation:
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PMID: 20833104 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: To study the effect of predefined order sets on the efficiency of computerized medication ordering, and to analyze the effect of different types of usability problems on ordering efficiency. METHODS: Crossover study to comparing the efficiency of two methods of ordering (with and without use of predefined order sets) in a laboratory setting using a computerized physician order entry system (CPOE). The excess number of mouse clicks and keystrokes (the difference in number of mouse clicks and keystrokes needed by each physician and the minimally required numbers to accomplish the ordering tasks) for each method was measured and per physician, occurrences of usability problems during the task sessions were recorded. Observed usability problems were categorized using Zhang et al.'s heuristic principles of good user interface design. The effect of different types of usability problems on the excess number of mouse clicks and keystrokes was statistically analyzed. RESULTS: The median excess number of mouse clicks and keystrokes needed by physicians was 6.2 times lower in the method with predefined order sets (p<0.01). The excess number of mouse clicks and keystrokes was significantly increased by vague and erroneous system messages with a factor of 2.62 (95% CI 2.24-3.07), the use of unfamiliar language and terminology by a factor of 1.28 (95% CI 1.14-1.43), and non-informative system feedback by a factor of 1.15 (95% CI 1.03-1.28), respectively. Other categories of usability problems had little influence on ordering efficiency. CONCLUSIONS: Predefined order sets can improve the efficiency of computerized ordering by reducing the excess number of mouse clicks and keystrokes. However, the efficiency of computerized ordering can be significantly impaired by usability problems due to vague and incorrect system messages, unfamiliar language, and non-informative system feedback. |
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Authors:
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R Khajouei; N Peek; P C Wierenga; M J Kersten; M W M Jaspers |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of medical informatics Volume: 79 ISSN: 1872-8243 ISO Abbreviation: Int J Med Inform Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-17 Completed Date: 2010-12-30 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9711057 Medline TA: Int J Med Inform Country: Ireland |
Other Details:
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Languages: eng Pagination: 690-8 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Department of Medical Informatics, Academic Medical Center - University of Amsterdam, The Netherlands. r.khajouei@amc.uva.nl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cross-Over Studies Efficiency, Organizational* Medical Order Entry Systems* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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