@Article{info:doi/10.2196/23304, author="Lim, Ji Young and Kim, Jong Kwang and Kim, Yoon and Ahn, So-Yeon and Yu, Jonghan and Hwang, Ji Hye", title="A Modular Mobile Health App for Personalized Rehabilitation Throughout the Breast Cancer Care Continuum: Development Study", journal="JMIR Form Res", year="2021", month="Apr", day="13", volume="5", number="4", pages="e23304", keywords="breast cancer; mobile health; rehabilitation; cancer continuum", abstract="Background: Although many mobile health (mHealth) apps have evolved as support tools for self-management of breast cancer, limited studies have developed a comprehensive app and described the algorithms for personalized rehabilitation throughout the breast cancer care continuum. Objective: This study aimed to develop a comprehensive mobile app and to describe an algorithm that adjusts personalized content to facilitate self-management throughout the breast cancer care continuum. Methods: The development process of the modular mHealth app included the following 4 steps: (1) organizing expert teams, (2) defining evidence-based fundamental content and modules, (3) classifying user information for algorithms to personalize the content, and (4) creating the app platform and connectivity to digital health care devices. Results: We developed a modular mHealth app service, which took 18 months, including a review of related literature and guidelines and the development of the app and connectivity to digital health care devices. A total of 11 functionalities were defined in the app with weekly analysis. The user information classification was formulated for personalized rehabilitation according to 5 key criteria: general user information, breast operation type, lymph node surgery type, chemotherapy and hormonal therapy use, and change in treatment after surgery. The main modules for personalized content included a self-monitoring screen, personalized health information, personalized exercise, and diet management. Conclusions: The strength of this study was the development of a comprehensive mHealth app and algorithms to adjust content based on user medical information for personalized rehabilitation during the breast cancer care continuum. ", issn="2561-326X", doi="10.2196/23304", url="https://formative.jmir.org/2021/4/e23304", url="https://doi.org/10.2196/23304", url="http://www.ncbi.nlm.nih.gov/pubmed/33847589" }