97 Development and evalutation of the Hospital Hero app 4 Figure 5. Results SUS item scores divided in negative and positive formulated items. SUS, system usability scale. Theme 1: user-friendliness Overall, children and their caregivers were positive about the user-friendliness and usability of the app. This observation was supported by the SUS total score from the questionnaire, which averaged 71.32 (SD = 17.80). Benchmark comparison indicated an overall ‘good’ usability. 87% of all respondents indicated that they would use the app more frequently (‘completely agree’ or ‘slightly agree’). However, younger children and their caregivers mentioned that the child sometimes needed help from their parents, especially in understanding how to scan the QR codes and navigate between the different screens. Children aged 4 or 5 years also
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