J Am Med Inform Assoc - Comparison of two kinds of interface, based on guided navigation or usability principles, for improving the adoption of computerized decision support systems: application to the prescription of antibiotics.

Tópicos

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Resumo

NTEXT: It is important to consider the way in which information is presented by the interfaces of clinical decision support systems, to favor the adoption of these systems by physicians. Interface design can focus on decision processes (guided navigation) or usability principles.OBJECTIVE: The aim of this study was to compare these two approaches in terms of perceived usability, accuracy rate, and confidence in the system.MATERIALS AND METHODS: We displayed clinical practice guidelines for antibiotic treatment via two types of interface, which we compared in a crossover design. General practitioners were asked to provide responses for 10 clinical cases and the System Usability Scale (SUS) for each interface. We assessed SUS scores, the number of correct responses, and the confidence level for each interface.RESULTS: SUS score and percentage confidence were significantly higher for the interface designed according to usability principles (81 vs 51, p=0.00004, and 88.8% vs 80.7%, p=0.004). The percentage of correct responses was similar for the two interfaces.DISCUSSION/CONCLUSION: The interface designed according to usability principles was perceived to be more usable and inspired greater confidence among physicians than the guided navigation interface. Consideration of usability principles in the construction of an interface--in particular 'effective information presentation', 'consistency', 'efficient interactions', 'effective use of language', and 'minimizing cognitive load'--seemed to improve perceived usability and confidence in the system.

Resumo Limpo

ntext import consid way inform present interfac clinic decis support system favor adopt system physician interfac design can focus decis process guid navig usabl principlesobject aim studi compar two approach term perceiv usabl accuraci rate confid systemmateri method display clinic practic guidelin antibiot treatment via two type interfac compar crossov design general practition ask provid respons clinic case system usabl scale sus interfac assess sus score number correct respons confid level interfaceresult sus score percentag confid signific higher interfac design accord usabl principl vs p vs p percentag correct respons similar two interfacesdiscussionconclus interfac design accord usabl principl perceiv usabl inspir greater confid among physician guid navig interfac consider usabl principl construct interfacein particular effect inform present consist effici interact effect use languag minim cognit loadseem improv perceiv usabl confid system

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