Optimizing an Outpatient mHealth Intervention for Children with Burns: A Convergent Mixed-Methods Study.

Burn injury is one of the most common traumatic injuries in childhood. Fortunately, 90% of pediatric burns may be treated in the outpatient setting after appropriate burn triage. Patients with burns face significant geographic disparities in accessing expert burn care due to regionalized care. To aid patients and their families during acute outpatient burn recovery, we developed a smartphone app, Telemedicine Optimized Burn Intervention (TOBI). With this app, we aimed to increase access to care by allowing secure, streamlined communication between patients and burn providers, including messaging and wound image transfer. The purpose of this study was to systematically evaluate user feedback to optimize the patient and provider experience. TOBI was evaluated using a convergent mixed-methods approach consisting of qualitative semi-structured interviews and quantitative measurements of app usability via the mHealth App Usability Questionnaire. Participants included 15 caregivers of pediatric patients with burns who used TOBI during treatment and ten burn providers. Users found TOBI to be a highly usable application in terms of usefulness, ease of use, satisfaction, and functionality. Qualitative data provided insight into user experience, satisfaction and preferences, difficulty navigating, usability and acceptability, and potential improvements. Although most users were highly satisfied, improvements were needed to optimize the burn app. We systematically made these improvements before we released TOBI for routine patient use. This study uncovered helpful recommendations for app improvements that can be generalized to other mobile health apps to increase their appeal and adoption.