Neoplasms

Skin and Connective Tissue Diseases

All Conditions

Breast Neoplasms

Breast Diseases

Skin Diseases

Eligible women will receive an invitation letter for a mammography accompanied by a leaflet mentioning the existence of the DA and encouraging them to consult their GP to initiate the DMP. The GPs will receive a letter informing them of the letter sent to their patients inviting them to make use of the DA, of the DA itself, and presenting the different stages in the DMP with encouragement to implement it.

Eligible women will receive only invitation letters, in line with national standard practice

At the beginning of the intervention, material i) informing women of the existence of the DA for participation or not in breast cancer screening and (ii) aiming to promote the implementation of shared medical decision will be sent or not sent to women and their GPs according to their allocation arm. This material will be sent at the same time as the breast cancer screening invitation letter.

For the secondary outcomes, questionnaires will be sent to a sample of women in each arm.

Leaflet "decidons ensemble" (making a decision together)

Cédric Rat, M.D. PhD.

Emilie Ferrat, M.D. PhD.

Sandrine Hild, M.D.

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

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

Shared Decision-making for Breast Cancer Screening in Primary Care

Participation rate for organised screening for breast cancer in each study arm for the 18 months after dispatch of the letter

Participation rate for organised breast cancer screening, in each study arm for the 18 months after dispatch of the letter, according to patient age, socio-economic status, regularity of medical surveillance, the presence of chronic or psychiatric pathologies and previous participation in screening

Scores for the 9-items Shared Decision Making Questionnaire. (5 response categories ; number 1 = completely disagree ; number 5 = completerly agree ; higher scores mean better outcome).

Scores for the 16-items Decisionnal Conflict Scale. (5 response categories ; number 1 = strongly agree ; number 5 = strongly disagree ; higher scores mean worse outcome).

Responses to the intention to participate in screening Questionnaire (Questionnaire developed for the project ; 4 response categories = yes, no, don't know, don't want to answer).

Responses to the knowledge questionnaire on organized screening (Questionnaire developed for the project ; 20 items , 3 response categories = true, false, dont know).

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Breast Cancer Screening Uptake: a Randomized Controlled Trial Assessing the Effect of a Decisional Aid	NCT05607849	Breast Cancer	Leaflet "decido...	50 Years - 74 Years	Nantes University Hospital
Breast Cancer Screening Uptake: a Randomized Controlled Trial Assessing the Effect of a Decisional Aid	NCT05607849	Breast Cancer	Leaflet "decido...	50 Years - 74 Years	Nantes University Hospital

Spots Global Cancer Trial Database for decisional aid