Development and Evaluation of Theory Guided Narrative and Non-narrative Interventions to Enhance Cancer Literacy and Cancer Prevention Beliefs in the Population: a Pilot Study

CLARO aims to answer the question, how information materials should be designed to strengthen optimistic beliefs on cancer prevention and to indirectly facilitate the acquisition of cancer literacy.

Four different information materials were developed and will be tested in this pilot study (2x2-design: text or animation-based / narrative or non-narrative). Participants will take part in a 30- to 40-minute survey. As part of the study, they will be randomly assigned to one of the information materials, and asked to evaluate it in depth, both quantitatively and qualitatively. The interviews will be conducted individually and face to face.

Recruitment: Two research assistants will approach potential participants at a shopping center in Heidelberg, Germany, to invite them to participate in the study. Participants will receive a leaflet with further details and contact information. Those interested will be able to participate immediately at a designated room next to the center, provided by the National Cancer Prevention Center, where all interviews will take place, or schedule an appointment via email. As an incentive, participants will receive 30€ via bank transfer upon completing the interview.

Randomization Procedure: Simple randomization - a research assistant will use an Excel spreadsheet to generate random participant codes, which will then be integrated into LimeSurvey to ensure a closed survey environment. The list of codes will be password protected and not accessible to the two research assistants who will conduct the interviews. LimeSurvey will then assign individual codes to participants. Participant codes and allocation details will then be printed on paper and placed within sealed envelopes. Interviewers will then use these envelopes to select the corresponding intervention guide.

Semi-Structured Interview: Post-intervention, participants will take part in a semi-structured interview. With participant permission, all interviews will be audio-recorded on VLC media player. The interviews will be conducted by two research assistants with a background in psychology and previous training on the interview technique.