%0 Journal Article %@ 2561-6722 %I JMIR Publications %V 5 %N 1 %P e34117 %T Refinement of a Parent–Child Shared Asthma Management Mobile Health App: Human-Centered Design Study %A Sonney,Jennifer %A Cho,Emily E %A Zheng,Qiming %A Kientz,Julie A %+ Department of Child, Family, and Population Health Nursing, School of Nursing, University of Washington, 1959 NE Pacific Street, Box 357262, Seattle, WA, 98195, United States, 1 206 685 2161, jsonney@uw.edu %K parent–child shared management %K school-age children %K asthma %K participatory design %K mHealth %K prototype %K usability %K family health informatics %D 2022 %7 17.2.2022 %9 Original Paper %J JMIR Pediatr Parent %G English %X Background: The school-age years, approximately ages 7 through 11, represent a natural transition when children begin assuming some responsibility for their asthma management. Previously, we designed a theoretically derived, tailored parent–child shared asthma management mobile health app prototype, Improving Asthma Care Together (IMPACT). Objective: The purpose of this study was to use human-centered design (HCD) to iteratively refine IMPACT to optimize user experience and incorporate evidence-based longitudinal engagement strategies. Methods: This study used a mixed methods design from December 2019 to April 2021. Our app refinement used the HCD process of research, ideation, design, evaluation, and implementation, including 6 cycles of design and evaluation. The design and evaluation cycles focused on core app functionality, child engagement, and overall refinement. Evaluation with parent–child dyads entailed in-person and remote concept testing and usability testing sessions, after which rapid cycle thematic analyses identified key insights that informed future design refinement. Results: Twelve parent–child dyads enrolled in at least one round of this study. Eight of the 12 child participants were male with a mean age of 9.9 (SD 1.6) years and all parent participants were female. Throughout evaluation cycles, dyads selected preferred app layouts, gamification concepts, and overall features with a final design prototype emerging for full-scale development and implementation. Conclusions: A theoretically derived, evidence-based shared asthma management app was co-designed with end users to address real-world pain points and priorities. An 8-week pilot study testing app feasibility, acceptability, and preliminary efficacy is forthcoming. %M 35175214 %R 10.2196/34117 %U https://pediatrics.jmir.org/2022/1/e34117 %U https://doi.org/10.2196/34117 %U http://www.ncbi.nlm.nih.gov/pubmed/35175214