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User-centered models for the development of digital health interventions are not consistently applied in healthcare settings. This study used a five-phase, user-centered approach to develop HEARTPrep©, a psychosocial intervention delivered via mobile app and telehealth to mothers expecting a baby with congenital heart disease (CHD) to promote maternal, family, and child well-being. Phases of intervention development were: (I) establishing partnerships; (II) creating content; (III) developing prototype and testable intervention; (IV) conducting think-aloud testing; and (V) completing beta testing. Partnerships with parents, clinicians, and design/technology experts were integral throughout the development of HEARTPrep©. Parents of children with CHD also served as participants in Phases II-V, contributing to the creation of content and providing feedback to inform the iterative refinement of HEARTPrep©. These five phases produced a refined digital health intervention with promising feasibility, usability, and acceptability results. This user-centered approach can be used to develop digital health interventions targeting various health outcomes. [ABSTRACT FROM AUTHOR]

Background: Providing high-quality psychosocial care to parents and other primary caregivers of children with cancer (henceforth referred to as caregivers) is important, given the numerous challenges associated with a pediatric cancer diagnosis and the increased risk for negative psychosocial sequelae among caregivers. The Electronic Surviving Cancer Competently Intervention Program (eSCCIP) is a psychosocial eHealth intervention for caregivers, developed using an iterative, user-centered process., Method: eSCCIP was tested in a single-arm pilot trial at Nemours Children's Hospital, Delaware (NCT05333601). The primary outcomes were intervention acceptability and feasibility, assessed via enrollment and retention targets, and item-level acceptability ratings. Enrollment and retention targets of 45% were set based on previous work, and an item-level acceptability threshold of 80% was set. A secondary exploratory analysis was conducted examining acute distress, anxiety, symptoms of post-traumatic stress, and family functioning., Results: 44 caregivers enrolled in the study and 31 completed. The intervention was rated favorably by completers, with over 80% of the sample selecting "mostly true" or "very true" for all items of the eSCCIP Evaluation Questionnaire, which was used to assess acceptability and feasibility. Enrollment and retention rates were 54% and 70%, respectively. Exploratory psychosocial outcomes showed statistically significant decreases from pre-intervention to post-intervention for overall symptoms of post-traumatic stress disorder (PTSD), cluster D symptoms of PTSD (negative mood and cognitions), and anxiety. Small-moderate effect sizes were observed for all psychosocial outcomes of interest., Conclusions: eSCCIP is an acceptable and feasible intervention for caregivers. Results are promising regarding reductions in symptoms of post-traumatic stress and anxiety., (© The Author(s) 2022. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)