Breast Cancer Screening Uptake: a Randomized Controlled Trial Assessing the Effect of a Decisional Aid

Shared decision-making for organised breast cancer screening could be improved by fostering interaction and exchanges of information between women and GPs, for instance by including an assistance tool in the dispatch of the invitation letter for Organised Screening (OS) for breast cancer. In 2018 the national cancer Institute funded the development of a decisional aid (DA) on the theme of whether or not to take part in breast cancer screening, specific to the French setting. It is the website Discutons-mammo.fr DEDICACES project 1.DEDICACES 2 is a pragmatic, non-inferiority, population-based trial with a cluster design. The aim is to assess the impact of the dispatch of a leaflet informing women of the existence of the DA Discutons-mammo.fr on the uptake by eligible women of breast cancer screening in an organised setting in usual practical conditions and in the general population

Inclusion Criteria:General practitioners (GP) All GPs practising in the 5 French departements Maine-et-Loire, Mayenne, Sarthe, Loire Atlantique and Vendee having seen more than 100 different patients in the year before baseline, will be eligible.Patientsaged de 50 to 74 yrsaffiliated to the French health insurance CPAMresiding in one of the 5 departmentseligible for organised screening for the month(s) under considerationwhose GP is included in the studyExclusion Criteria:General practitioners (GPs) :Refusal to participateParticipants in other studies on breast cancer screeningPractising in a health centrePatientsRefusal to participateHaving a GP who refuses to take partAffiliated to a Health CentreTaking part in other studies on breast cancer screeningBeing under guardianshipPresently followed for a condition that might interfere with organised screening (breast cancer, anomaly, medical surveillance or women with high riskHaving a history of breast cancer