User engagement

However, for eHealth technologies to have an effect, they need to be accepted and used in the intended way to benefi t patients the most. But this has often proven to be diffi cult to promote. In this chapter, we will go deeper into this issue by fi rst elaborating on three important concepts regarding the use of technology, namely, acceptance, adoption and adherence. Second, we will connect these three concepts to user engagement. User engagement is introduced as a way to increase the use of eHealth technologies. The Perfect Interaction Model will be introduced as a way to support the design of eHealth technologies that fi t with the intentions of users and thereby increase user engagement. Part three of the chapter focuses on how to measure user engagement, while part four provides a case study as an example of how to design and evaluate an eHealth technology based on user engagement. After completing this chapter, you will be able to: • provide a definition and state the importance of the concepts acceptance, adoption and adherence