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Randomized Controlled Trial
. 2019 Apr;34(4):591-597.
doi: 10.1007/s11606-018-4622-4. Epub 2018 Aug 8.

Randomized Trial of Personalized Breast Density and Breast Cancer Risk Notification

Jennifer S Haas  1 , Catherine S Giess  2 , Kimberly A Harris  3 , Julia Ansolabehere  3 , Celia P Kaplan  4
Affiliations
Randomized Controlled Trial

Randomized Trial of Personalized Breast Density and Breast Cancer Risk Notification

Jennifer S Haas et al. J Gen Intern Med. 2019 Apr.

Abstract

Background: Despite widespread implementation of mammographic breast density (MBD) notification laws, the impact of these laws on knowledge of MBD and knowledge of breast cancer risk is limited by the lack of tools to promote informed decision-making in practice.

Objective: To develop and evaluate whether brief, personalized informational videos following a normal mammogram in addition to a legislatively required letter about MBD result can improve knowledge of MBD and breast cancer risk compared to standard care (i.e., legislatively required letter about MBD included with the mammogram result).

Design/participants: Prospective randomized controlled trial of English-speaking women, age 40-74 years, without prior history of breast cancer, receiving a screening mammogram with a normal or benign finding (intervention group n = 235, control group n = 224).

Intervention: brief (3-5 min) video, personalized to a woman's MBD result and breast cancer risk.

Main measures: Primary outcomes were a woman's knowledge of her MBD and risk of breast cancer. Secondary outcomes included whether a woman reported that she discussed the results of her mammogram with her primary care provider (PCP).

Key results: Relative to women in the control arm, women in the intervention arm had greater improvement in their knowledge of both their personal MBD (intervention pre/post 39.2%/ 77.5%; control pre/post 36.2%/ 37.5%; odds ratio (OR) 5.34 for change for intervention vs. control, 95% confidence interval (CI) 3.87-7.36; p < 0.001) and risk of breast cancer (intervention pre/post: 66.8%/74.0%; control pre/post 67.9%/ 65.2%; OR 1.42, 95% confidence interval (CI) 1.09-1.84; p = 0.01). Women in the intervention group were more likely than those in the control group to report discussing the results of their mammogram with their PCP (p = 0.05).

Conclusions: Brief, personalized videos following mammography can improve knowledge of MBD and personal risk of breast cancer compared to a legislatively mandated informational letter. Trial Registration Clinicaltrials.gov (NCT02986360).

Keywords: breast cancer risk; breast density; mammography; patient education.

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Conflict of interest statement

The authors declare that they do not have a conflict of interest.

Figures

Figure 1
Figure 1
Eligible patients were English-speaking women, age 40–74 years, who had received a bilateral screening mammogram with a normal or benign finding (i.e., Breast Imaging-Reporting and Data System (BIRADS) 1 or 2) at Brigham and Women’s Hospital and were receiving the results of this mammogram. Patients who did not have an email address on record in the electronic health record (EHR) were excluded, or who had a prior diagnosis of breast cancer or ductal carcinoma in situ (DCIS) documented in the EHR or by self-report.
Figure 2
Figure 2
Effect of the intervention on knowledge of calculated breast cancer risk and measured breast density.
Figure 3
Figure 3
Effect of the intervention on knowledge of calculated breast cancer risk and measured breast density by breast cancer risk and breast density.
See this image and copyright information in PMC

References

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