PETRA was developed in collaboration with almost 100 clients and clinicians. In our developmental process, we have conducted multiple focus groups and interviews to determine important requirements for a personalized diary tool. This process resulted in the design of the first prototypes of PETRA's decision aid and feedbackmodule. In multiple user sessions, these prototypes were continuously reevaluated and adapted based on feedback of clients and clinicians. Below you can view several different versions of the decision aid and feedbackmodule, and examine how PETRA changed over the course of its development. Or read our preprint on the development of PETRA here.

Decision aid: select goal

Compiling a personalized diary starts with selecting a goal. Find out below how this page was developed.


The feedbackmodule visualizes the diary data. Find out below how this module was developed.