![]() Many health care information systems have been developed to promote the quality of health care. However, more studies are needed to support this finding. The results suggest that CW would be the preferred method for evaluating systems intended for novice users and HE for users who have experience with similar systems. ![]() The average severity of problems identified using CW was significantly higher than that of HE ( P < .0001).Ĭonclusion: This study showed that HE and CW do not differ significantly in terms of the number of usability problems identified, but they differ based on the severity of problems and the coverage of some usability attributes. Results of CW showed a significant difference between the number of problems related to usability attributes ( P < .0001). There was no significant difference between the number of problems identified by HE, based on different usability attributes ( P = .232). The number of problems identified using CW concerning the “learnability” attribute was significantly higher than those identified using HE ( P = .005). HE identified a significantly higher number of problems related to the “satisfaction” attribute ( P = .002). Results: In total, 156 problems were identified using the 2 methods. We compared the 2 methods in terms of the number of identified usability problems, their severity, and the coverage of each method. Materials and methods: Five evaluators independently evaluated a medical office management system using HE and CW. The objective of this study was to compare 2 expert-based methods, heuristic evaluation (HE) and cognitive walkthrough (CW), for evaluating usability of health care information systems. Objective: There are several user-based and expert-based usability evaluation methods that may perform differently according to the context in which they are used.
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