Table 1. Interview guide used in the focus groups.

(1) Explore perceptions of participants related to visual aids (VA)

• Could you give us examples of VA? Examples in the medical field? Who are they for?

(2) Determine acceptance criteria for VA by exploring the views of patients and HP regarding VA as well as collecting their reactions to different types of images.

• Could you comment on this selection of images? (Presentation by the moderator of a selection of VA related to the medical field. The infographics were chosen to represent a palette of diverse tones and aesthetics: humorous, scientific and symbolic versus descriptive etc. Only paper-based VA were presented.) • Do you enjoy using images to transmit information? Why? • Could you give us personal examples where you have been confronted with images related to the medical field? • Do you perceive that the use of images helps the transmission of information? How? Why?

(3) Identify determining factors that would influence the use of VA, in particular by questioning participants on the areas of healthcare where VA would be perceived as being the most useful and by exploring the needs and expectations of patients and HP.

• What criteria must be applied to a visual aid for it to be useful? • Do aesthetics play a role in the interpretation of an image? • What influences the use of VA? • How could images be integrated into daily care? • What areas would be the most relevant? (Examples: treatment, prevention, explanation of diseases, explanation of the healthcare system, anatomy). • Which format seems to you the most suitable? Paper versus digital.