Abstract
Background
Annual screening breast MRI is recommended for women at high (≥ 20% lifetime) breast cancer risk, but is underutilized. Guided by the Health Services Utilization Model (HSUM), we assessed factors associated with screening breast MRI among high-risk women.
Methods
From August 2020–January 2021, we recruited an online convenience sample of high-risk women ages 25–85 (N = 232). High-risk was defined as: pathogenic genetic mutation in self or first-degree relative; history of lobular carcinoma in situ; history of thoracic radiation; or estimated lifetime risk ≥ 20%. Participants self-reported predisposing factors (breast cancer knowledge, health locus of control), enabling factors (health insurance type, social support), need factors (perceived risk, screening-supportive social norms, provider recommendation), and prior receipt of screening breast MRI. Multivariable logistic regression analysis with backward selection identified HSUM factors associated with receipt of screening breast MRI.
Results
About half (51%) of participants had received a provider recommendation for screening breast MRI; only 32% had ever received a breast MRI. Breast cancer knowledge (OR = 1.15, 95% CI = 1.04–1.27) and screening-supportive social norms (OR = 2.21, 95% CI = 1.64–2.97) were positively related to breast MRI receipt. No other HSUM variables were associated with breast MRI receipt (all p’s > 0.1).
Conclusions
High-risk women reported low uptake of screening breast MRI, indicating a gap in guideline-concordant care. Breast cancer knowledge and screening-supportive social norms are two key areas to target in future interventions. Data were collected during the COVID-19 pandemic and generalizability of results is unclear. Future studies with larger, more heterogeneous samples are needed to replicate these findings.
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Data availability
Data are publicly available at https://osf.io/xpz35/.
Notes
ACR guidelines recommend annual mammography starting at age 40. Thus, we originally intended to exclude women who had not received a mammogram in the past year. However, given that data collection occurred during the early months of the COVID-19 pandemic, and screening availability may have been limited, we elected to extend the time period in which participants were considered “up to date” on screening to two years.
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Funding
This work was supported by a grant from the Breast Cancer Research Foundation (ASPO-19-002, PI: Conley). The content presented here is solely the responsibility of the authors and does not represent the official views of the Breast Cancer Research Foundation.
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CCC: Conceptualization, funding acquisition, formal analysis, visualization, interpretation, writing–original draft. JDR: Investigation, data curation, project administration, writing–review and editing. MM: Investigation, data curation, project administration, writing–review and editing. NCB: Data curation, formal analysis, methodology, writing–review and editing. BLN: Conceptualization, resources, supervision, writing–review and editing. SCO: Conceptualization, supervision, writing–review and editing. STC: Conceptualization, funding acquisition, resources, supervision, writing–review and editing.
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Study procedures were reviewed by the Advarra Institutional Review Board (Protocol #00000971) and determined exempt from IRB oversight due to minimal risk.
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The Advarra Institutional Review Board provided a waiver of informed consent for this study (Protocol #00000971) due to minimal risk.
Competing interests
Drs. Conley and O’Neill have received research funding from Pfizer. No other authors have conflicts of interest to disclose.
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Conley, C.C., Rodriguez, J.D., McIntyre, M. et al. Self-reported barriers to screening breast MRI among women at high risk for breast cancer. Breast Cancer Res Treat 202, 345–355 (2023). https://doi.org/10.1007/s10549-023-07085-w
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DOI: https://doi.org/10.1007/s10549-023-07085-w