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Usability Testing of a Patient-Centered Mobile Health App for Supporting and Guiding the Pediatric Emergency
Jessica Rochat1,2, Frédéric Ehrler2, Johan N Siebert3
1Faculty of Medicine, University of Geneva, Geneva, Switzerland.
Insights
The InfoKids mobile health app shows good usability for pediatric emergency departments, with parents reporting high satisfaction. Identified issues will guide improvements for wider adoption.
Area of Science:
- Digital Health
- Human-Computer Interaction
- Pediatric Emergency Medicine
Background:
- Patient experience in pediatric emergency departments (EDs) is often suboptimal and stressful.
- A mobile health (mHealth) app, InfoKids, was developed using patient-centered principles to support pediatric ED patients and families.
- The app aims to improve the experience before, during, and after a pediatric ED visit.
Purpose of the Study:
- To evaluate the usability of the InfoKids mHealth app through testing with potential end-users.
- Assessing effectiveness, efficiency, and user satisfaction of the app.
Main Methods:
- In-laboratory, video-recorded usability testing involving 17 parents executing 9 goal-oriented tasks.
- Effectiveness measured by task completion rate; efficiency by time on task; satisfaction by System Usability Scale.
- Think-aloud sessions analyzed, with usability problems rated for severity and categorized.
Main Results:
- High overall completion rate (97.4%) and good effectiveness (88.2% task completion).
- Users reported good to excellent perceived usability.
- 14 usability problems identified, 50% rated as major or catastrophic, indicating areas for improvement.
Conclusions:
- The InfoKids app demonstrates good to excellent usability among users.
- Identified areas for improvement and proposed mitigation measures will inform future development.
- Findings contribute to scarce research on mHealth apps supporting patient care episodes.
Background:
Patient experience in emergency departments (EDs) remains often suboptimal and can be a source of stress, particularly in pediatric settings. In an attempt to support patients and their families before, during, and after their visit to a pediatric ED, a mobile health (mHealth) app was developed by a multidisciplinary team based on patient-centered care principles.
Objective:
This study aims to evaluate the usability (effectiveness, efficiency, and satisfaction) of a new mHealth app, InfoKids, by potential end users through usability testing.
Methods:
The app was assessed through an in-laboratory, video-recorded evaluation in which participants had to execute 9 goal-oriented tasks, ranging from account creation to the reception of a diagnostic sheet at the end of the emergency care episode. Effectiveness was measured based on the task completion rate, efficiency on time on task, and user satisfaction according to answers to the System Usability Scale questionnaire. Think-aloud usability sessions were also transcribed and analyzed. Usability problems were rated for their severity and categorized according to ergonomic criteria.
Results:
A total of 17 parents participated in the study. The overall completion rate was 97.4% (149/153). Overall, they reported good effectiveness, with the task successfully completed in 88.2% (135/153) of cases (95% CI 83%-93%). Each task, with the exception of the first, created difficulties for some participants but did not prevent their completion by most participants. Users reported an overall good to excellent perceived usability of the app. However, ergonomic evaluation identified 14 usability problems occurring 81 time. Among these, 50% (7/14) were serious as their severity was rated as either major or catastrophic and indicated areas of improvements for the app. Following the suggested usability improvements by participants, mitigation measures were listed to further improve the app and avoid barriers to its adoption.
Conclusions:
Usability of the InfoKids app was evaluated as good to excellent by users. Areas of improvement were identified, and mitigation measures were proposed to inform its development toward a universal app for all ED patients visiting a digitalized institution. Its contribution could also be useful in paving the way for further research on mobile apps aimed at supporting and accompanying patients in their care episodes, as research in this area is scarce.
