Effect of Information About the Benefits and Harms of Mammography on Women's Decision Making

The selected women will receive a letter of invitation with information about the study. In the following 1-2 weeks they will receive a phone call to confirm that they have received the mailed letter and to assess the inclusion criteria. If they agree to participate in the study, they will be asked for informed consent. All the participants will receive a first questionnaire, the pre-intervention survey (10-15 minutes), via web or regular mail. Trained interviewers will collect the responses by phone for women who prefer this method. Once the pre-intervention survey is completed, women will receive the leaflet (intervention or control) via regular mail. Two weeks later, the participants will be contacted again to collect the post-intervention survey (15-20 minutes), via web or by phone. Participation in the mammographic exams of the EDBCP will be collected in the three-month period following the corresponding invitation letter.

Inclusion criteria

• Women aged 49-50 who - in 2-4 months - will be invited to participate for the first time in the EDBCP of the Institut Hospital del Mar d'Investigacions Mèdiques (IMIM, Barcelona), ICO-Hospitalet (Hospitalet de Llobregat), Lleida Health Region, and the Canary Islands.
• Women with low health literacy will be included

Exclusion criteria

• Previous history of breast cancer
• Difficulty speaking Spanish or Catalan
• Cognitive impairment to understand or complete the materials based on the interviewer judgment