Clinical trial · Interventional
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
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
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.
Conditions
Conditions (4)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Breast Cancer | Malignant Breast Neoplasm | CURATED_EXACT | 0.92 |
| Breast Tumor | Breast Neoplasm | ALIAS | 0.90 |
| Mammary Cancer | — | UNRESOLVED | — |
| Mammary Tumor | — | UNRESOLVED | — |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Decision aid (DA) for breast cancer screening | Other | — | UNRESOLVED |
| Standarised information for breast cancer screening | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- ACTIVE_COMPARATOR
- label
- Intervention group
- description
- 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?
- interventionNames
- Other: Decision aid (DA) for breast cancer screening
- type
- PLACEBO_COMPARATOR
- label
- Control group
- description
- 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.
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 50 Years
- Maximum age
- 69 Years
Show eligibility criteria text
Inclusion Criteria: * Women from 50 to 69 years old * Attend the primary care centres * Fluent in Spanish Exclusion Criteria: * Women with a personal history of breast cancer * Have a current mammogram (as recommended by the Chilean Ministry of Health) * Not having the capacity to consent.
References
Publications (2)
- RESULTBravo P, Dois A, Fernandez-Gonzalez L, Hernandez-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. PMID 33592532
- DERIVEDRiganti P, Ruiz Yanzi MV, Escobar Liquitay CM, Sgarbossa NJ, Alarcon-Ruiz CA, Kopitowski KS, Franco JV. Shared decision-making for supporting women's decisions about breast cancer screening. Cochrane Database Syst Rev. 2024 May 10;5(5):CD013822. doi: 10.1002/14651858.CD013822.pub2. PMID 38726892