Table 3.

Summary of four design challenges and candidate solutions, reproduced verbatim from design notes

Motivating finding from study phase	Design challenge	Candidate solution
Disengaged patients; Inadequate tools	Can we motivate people to log data over a continuous period of time and, if so, what benefits can be gained from it?	“30-day challenge” for logging health data to support self-care behavior over a short period of time.
Suboptimal information work; Inadequate tools; Knowledge gaps	Can we modify knowledge and behavior by supporting cause-effect simulation and experimentation to depict the functional relationships between the different parts of human body and behavior?	The “Hearty Humunculus,” a simulation of the effect of different self-care behaviors to support learning and testing of dynamic functional relationships.
Disengaged patients; Inadequate tools	Can we use data logging to support goal setting and problem solving?	A tool to promote behavior by setting goals and helping identify and resolve barriers to their goals.
Suboptimal information work; Inadequate tools; Collaborative self-care	Can we structure and improve patient/caregiver-clinician communication regarding heart failure patient data?	A structured clinic visit tool to support and enhance communication and collaboration between patients and clinicians before and during clinic visits.