may best be integrated into this process.
Objective: To investigate the integration of top-down and bottom-up requirements in the co-design of eHealth applications, by building on a case study of the development of a mobile self-compassion intervention for newly diagnosed cancer patients.
Methods: Four co-design tasks were formulated at the start of the project and adjusted and evaluated throughout: 1) explore bottom-up experiences, 2) reassess top-down content, 3) incorporate bottom-up and top-down into concrete features and design, 4) synergize bottom-up and top-down into intervention context. These tasks were executed iteratively during a series of codesign sessions over the course of 2 years, in which 15 patients and 7 nurses (recruited via 2 hospitals) participated. Based on these sessions, a list of requirements, a final intervention design and an evaluation of the co-design tasks was yielded.
Results: The final list of requirements included intervention content (e.g. main topics of Compassionate Mind Training such as psycho-education about three emotion systems, main issues that patients encounter post-diagnosis such as regulating information consumption), navigation, visual design, implementation strategies and persuasive elements. The final intervention ‘Compas-Y’ is a mobile self-compassion training that consists of six training modules and several supportive functionalities such as a mood tracker and persuasive elements such as push notifications. The four co-design tasks helped to overcome challenges in the development process such as dealing with conflicting top-down and bottom-up requirements, and enabled the integration of all main requirements into the design.
Conclusions: Our study addresses the necessary integration of top-down and bottom-up requirements into eHealth development, by examining a preliminary model of four co-design tasks. Broader considerations regarding designing a mobile intervention based on traditional intervention formats and merging the scientific disciplines of psychology and design research are discussed.