Neoplasms

Skin and Connective Tissue Diseases

All Conditions

Immune System Diseases

Breast Neoplasms

Hypersensitivity

Breast Diseases

Skin Diseases

An exam by tomosynthesis will be realised at the inclusion of the patient in the study.

Evaluation of the Tomosynthesis

An exam by tomosynthesis will be realised at the inclusion of the patient in the study

Avaluation of a medical device: the tomosynthesis

The main objective of the study is to assess the sensitivity and specificity of Tomosynthesis in detecting the multicentricity of mammary tumor.

The secondaries objectives of the study are:

* Sensitivity and specificity in detecting multifocality of breast tumor
* Sensitivity and specificity of Tomosynthesis in the detection of contralateral tumors
* Predetermination of potential targets for ultrasound

Etude Tomos- Apport de la Tomosynthèse Dans le Bilan d'Extension locorégional préthérapeutique d'Une Tumeur du Sein : Recherche de multicentricité Tomos Study- Contribution of Tomosynthesis In Locoregional Pretherapeutic Staging of a Breast Tumor: Multicentricity Search

Etude Tomos- Apport de la Tomosynthèse Dans le Bilan d'Extension locorégional préthérapeutique d'Une Tumeur du Sein : Recherche de multicentricité

To calculate the sensitivity and specificity of both types of imaging (mammography and Tomosynthesis) with respect to number of tumors multicentric and multifocal identified through MRI. The other parameters VPN, VPP will also be calculated and discussed.

Centre Jean Perrin

The intervention group will access a web page, answer a set of questionnaires at baseline, and then the DA (developed according to the IPDAS recommendations). The intervention group will complete the same questionnaires two weeks later. Six months later we will confirm if the screening was undertaken by checking medical records.

The online DA for breast cancer screening is a web-based education material to inform women about the benefits and risks associated with the screening. The contents of the DA are: 1) Assessing breast cancer; 2) What is breast cancer screening?; 3) What will happen if I diagnosed with breast cancer?; 4) What is overdiagnosis?; 5) What is false positive?; 6) the statistics of breast cancer screening; 7) Now is my turn, do I want to take it?

The Control group will access a webpage, answer a set of questionnaires at baseline, and then receive standardised information given by the healthcare system.

The control group will complete the same questionnaires two weeks later, afterwards they will access the DA. Six months later we will confirm if the screening was undertaken by checking medical records.

The online DA for breast cancer screening is a web-based education material to inform women about the benefits and risks associated with the screening. The contents of the DA are: 1) Assessing breast cancer; 2) What is breast cancer screening?; 3) What will happen if I diagnosed with breast cancer?; 4) What is overdiagnosis?; 5) What is false positive?; 6) the statistics of breast cancer screening; 7) Now is my turn, do I want to take it?

Decision aid (DA) for breast cancer screening

Information provided by the Chilean Ministry of Health in regards to access to breast cancer screening (Age, frequency and costs)

Standarised information for breast cancer screening

Paulina Bravo, PhD

Alejandra Martinez, MSc

Alejandra Martínez

Breast cancer is one of the most common cancers in Chile. National efforts focus on early detection, offering universal access to breast cancer screening through mammography to women at risk age. However, 30% of women do not undertake the exam due to a lack of knowledge and anxiety when facing the decision. The aim of this study is to develop and evaluate the effectiveness of a decision aid (DA) for women facing breast cancer screening decision in the country. Methods: following the Medical Research Council guidelines for the development and implementation of a complex intervention in public health, the investigators have: 1) culturally adapted the German DA for mammography; 2) conducted focus groups with experts to further develop the DA; 3) pilot-tested the online DA with 20 women in primary care centres.

A total of 3,269 women aged 50 to 69 years old are invited to join the study. The intervention group accesses a webpage, answers a set of questionnaires at baseline, and then the DA (developed according to the IPDAS recommendations). The Control group accesses a webpage, answers a set of questionnaires at baseline, and then receives standardised information given by the healthcare system. Both groups complete the questionnaires two weeks later. The primary outcome measure is an adapted and validated version of Informed Choice. Additionally, decisional conflict, anxiety, and screening undertake rate are measured. Multiple lineal regression analysis will be conducted.

There is an alarming rise of breast cancer in developing countries, where early detection is rare and the late findings build up an important mortality rate. In Chile, the mortality rate is 15,5 per 100.000 women, where breast cancer is the first death caused by tumors. Governmental efforts had focused on increase an opportune detection and had offered universal and guaranteed access to breast cancer screening to women in at-risk age (50 to 59 years old). Still, about 30% of the women of at-risk age choose to not do the mammogram. Anxiety and lack of awareness are the principal reasons associated with the decision of rejecting or postponing the exam. Women would have trouble in making an informed decision about the breast cancer exam, resulting in possible negatives consequences for their wellbeing. Considering that the health-related decision-making process depends importantly on the personal balance of risk and benefits related to the decision, it is imperative to explore strategies that support women in the decision-making progress for breast cancer screening.

The aim of this study is to develop and evaluate the effectiveness of a decision aid (DA) for women facing breast cancer screening decision in the country. Methods: following the Medical Research Council guidelines for the development and implementation of a complex intervention in public health, the investigators have: 1) culturally adapted the German DA for mammography; 2) conducted focus groups with experts to further develop the DA; 3) pilot-tested the online DA with 20 women in primary care centres; 4) A two-arm randomized control trial will be conducted with a total of 3,269 women aged 50 to 69 years old in ten primary care centres in Chile.

The intervention group will access a webpage, answers a set of questionnaires at baseline, and then the DA (developed according to the IPDAS recommendations). The Control group will access a webpage, answers a set of questionnaires at baseline, and then receives standardised information given by the healthcare system. Both groups will complete the questionnaires two weeks later. The primary outcome measure is an adapted and validated version of Informed Choice. Additionally, decisional conflict, anxiety, and screening undertake rate will be measure. Multiple lineal regression analysis will be conducted.

The intervention group will access a webpage, answers a set of questionnaires at baseline, and then the DA (developed according to the IPDAS recommendations). The Control group will access a webpage, answers a set of questionnaires at baseline, and then receive standardised information given by the healthcare system. Both groups will complete the questionnaires two weeks later.

The Effect of a Patient Decision Aids for Breast Cancer Screening

Patient Decision Aids for Women Facing the Decision of Breast Cancer Screening in the Public Health Sector

An adapted and validated version of the informed choice questionnaire will be used: this is a five-item questionnaire to measure informed choice (Bravo P, Dois A, Fernández-González L, Hernández-Leal MJ, Villarroel L. \[Validation of the Informed Choice instrument for Chilean women facing a mammography decision in primary care\]. Aten Primaria. 2021 Mar;53(3):101943. doi: 10.1016/j.aprim.2020.08.005. Epub 2021 Feb 13. Spanish. PubMed ID: 33592532).

Minimum value= 5 Maximum value= 25

Decisional conflict scale with 16 items that measure uncertainty in the decision making process.

Minimum value= 16 Maximum value= 80

This will be measured with the DASS-21 Scale, a self-reported 21-item that captures depression, anxiety and stress during the last week.

Minimum value= 21 Maximum value= 84

This is a two-item self-reported satisfaction questionnaire related to breast cancer screening.

Minimum value= 0 Maximum value= 1

This will be the number of women who decided to undertake the mammography. This outcome will be obtained from the clinical record of each participant six months after baseline questionnaires.

Minimum value= 0 Maximum value= 1

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
Etude Tomos- Apport de la Tomosynthèse Dans le Bilan d'Extension locorégional préthérapeutique d'Une Tumeur du Sein : Recherche de multicentricité Tomos Study- Contribution of Tomosynthesis In Locoregional Pretherapeutic Staging of a Breast Tumor: Multicentricity Search	NCT01522300	Mammary Tumor	Evaluation of t... Avaluation of a...	18 Years -	Centre Jean Perrin
The Effect of a Patient Decision Aids for Breast Cancer Screening	NCT04948983	Breast Cancer Mammary Cancer Breast Tumor Mammary Tumor	Decision aid (D... Standarised inf...	50 Years - 69 Years	Pontificia Universidad Catolica de Chile
The Effect of a Patient Decision Aids for Breast Cancer Screening	NCT04948983	Breast Cancer Mammary Cancer Breast Tumor Mammary Tumor	Decision aid (D... Standarised inf...	50 Years - 69 Years	Pontificia Universidad Catolica de Chile

Spots Global Cancer Trial Database for mammary tumor