Clinical decision support in electronic prescribing (e-Rx) systems can improve patient safety and quality of care. Despite the availability of drug information knowledgebases and decision support modules, users often disable this functionality or customize it to minimize irrelevant or insignificant alerts, due to concerns about alert fatigue, i.e., decreasing the "attention cost" of alerts. We postulate that novel user interfaces may decrease the "attention cost" of alerts, as has been shown in inpatient CPOE. This study explores alternative approaches to display alerts, and examines whether and how human factors based interface design can be used to improve signal detection from noisy data (alerts and reminders) in an existing e-Rx system. The issues in presenting multiple drug alerts in an outpatient e-Rx system are described. Several novel drug alert presentation interfaces are introduced. Both expert evaluation and formal usability testing show that the TreeDashboard-View is better perceived than the text-centric ScrollText-View in delivering multiple drug alerts during e-Rx practice. Physician prescribers' perceptions are discussed.
| Identifer | oai:union.ndltd.org:VANDERBILT/oai:VANDERBILTETD:etd-07242009-004432 |
| Date | 27 July 2009 |
| Creators | Xie, Minhui |
| Contributors | Kevin B. Johnson, MD, Matthew B. Weinger, MD, William M. Gregg, MD |
| Publisher | VANDERBILT |
| Source Sets | Vanderbilt University Theses |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.library.vanderbilt.edu/available/etd-07242009-004432/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Vanderbilt University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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