TABLE 2.

Patient ambassador interview guide

Topic	Research questions	Interview questions
The role as ambassador	How does the ambassador experience his or her role in the supportive and mentoring relationship with the patient?	What motivated you to volunteer as a patient ambassador? Did your motivation change during or after the program ended? What thoughts and considerations did you have regarding the patient ambassador role? What expectations did you have to your role as patient ambassador? Were these expectations met? Did you experience any discrepancies between your expectations and what you experienced?
Patient ambassador support	How does the ambassador experience the patient ambassador support?	How did your contact with the patient begin? How did you experience the progression of the actual contact? What type of contact did you have? What type of contact did you have the most? What type of contact did you experience worked the best or worst? What was your preference? How often did you have contact with your patient? How was the match between you and your patient? How did you experience your relationship with the patient? What did you talk about during your conversations? What personal experiences did you share? What specifically worked well? Which conversations were particularly of value to the patient (from your perspective)? What was difficult during the program? What did you do when it was difficult? Which conversations were particularly difficult? Did you experience the need to contact to the patient's relatives? What did you think about how the 12‐week program ended?
The value of the role as ambassador	What value does the support have for the patient ambassador?	What value did it have for you to be patient ambassador?
The need for support as patient ambassador	To what extent is there a need for support as a patient ambassador?	Did you experience a need for support as a patient ambassador? If yes, what type of support did you need and from whom? Did you participate in the patient ambassador support network meetings? If yes, what impact did these meetings have on you as a patient ambassador? What was especially helpful from these meetings? If no, why did you not participate in the meetings? Did you receive support elsewhere?
The optimal patient ambassador support programme	What is the optimal patient ambassador support program?	How was the patient ambassador training program useful compared to what you experienced? Was there any information, knowledge or support lacking during the program? If yes, explain. How do you think the patient ambassador support program can be improved?