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Current Oncology
Volume 26
Issue 4
10.3747/co.26.4951
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Article

Exploring Reasons for Overuse of Contralateral Prophylactic Mastectomy in Canada

by
J.E. Squires
1,2,*,
S.N. Simard
3,
S. Asad
2,
D. Stacey
1,2,
I.D. Graham
2,4,
M. Coughlin
2,
M. Clemons
5,6,7,
J.M. Grimshaw
2,7,
J. Zhang
8,
J.M. Caudrelier
9 and
A. Arnaout
5,10
1
School of Nursing, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
2
Clinical Epidemiology Program, The Ottawa Hospital Research Institute, Ottawa, ON, Canada
3
Bloomberg School of Nursing, University of Toronto, Toronto, ON, Canada
4
School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada
5
Department of Medicine, University of Ottawa, Ottawa, ON, Canada
6
Division of Medical Oncology, The Ottawa Hospital Cancer Centre, Ottawa, ON, Canada
7
Cancer Therapeutics Program, The Ottawa Hospital Research Institute, Ottawa, ON, Canada
8
Department of Plastic Surgery, The Ottawa Hospital and University of Ottawa, Ottawa, ON, Canada
9
Department of Radiation Oncology, The Ottawa Hospital and University of Ottawa, Ottawa, ON, Canada
10
Department of Surgery, The Ottawa Hospital and University of Ottawa, Ottawa, ON, Canada
*
Author to whom correspondence should be addressed.
Curr. Oncol. 2019, 26(4), 439-457; https://doi.org/10.3747/co.26.4951
Submission received: 11 May 2019 / Revised: 8 June 2019 / Accepted: 9 July 2019 / Published: 1 August 2019

Abstract

Background: Contralateral prophylactic mastectomy (CPM) in women with known unilateral breast cancer (BCA) has been increasing despite the lack of supportive evidence. The purpose of the present study was to identify the determinants of CPM in women with unilateral BCA. Methods: This qualitative descriptive study used semi-structured interviews informed by the Theoretical Domains Framework. We interviewed 74 key informants (surgical oncologists, plastic surgeons, medical oncologists, radiation oncologists, nurses, women with BCA) across Canada. Interviews were analyzed using thematic analysis and an analysis for shared and discipline-specific beliefs. Results: In total, 58 factors influencing the use of CPM were identified: 26 factors shared by various health care professional groups, 15 discipline-specific factors (identified by a single health care professional group), and 17 factors shared by women with unilateral BCA. Health care professionals identified more factors discouraging the use of CPM (n = 26) than encouraging its use (n = 15); women with BCA identified more factors encouraging use of CPM (n = 12) than discouraging its use (n = 5). The factor most commonly identified by health care professionals that encouraged CPM was lack of awareness of existing evidence or guidelines for the appropriate use of CPM (n = 44, 75%). For women with BCA, the factor most likely influencing their decision for CPM was wanting a better esthetic outcome (n = 14, 93%). Conclusions: Multiple factors discouraging and encouraging the use of CPM in unilateral BCA were identified. Those factors identify potential individual, team, organization, and system targets for behaviour change interventions to reduce CPM.
Keywords: contralateral prophylactic mastectomy; breast cancer; behaviour change; implementation; knowledge translation contralateral prophylactic mastectomy; breast cancer; behaviour change; implementation; knowledge translation

Share and Cite

MDPI and ACS Style

Squires, J.E.; Simard, S.N.; Asad, S.; Stacey, D.; Graham, I.D.; Coughlin, M.; Clemons, M.; Grimshaw, J.M.; Zhang, J.; Caudrelier, J.M.; et al. Exploring Reasons for Overuse of Contralateral Prophylactic Mastectomy in Canada. Curr. Oncol. 2019, 26, 439-457. https://doi.org/10.3747/co.26.4951

AMA Style

Squires JE, Simard SN, Asad S, Stacey D, Graham ID, Coughlin M, Clemons M, Grimshaw JM, Zhang J, Caudrelier JM, et al. Exploring Reasons for Overuse of Contralateral Prophylactic Mastectomy in Canada. Current Oncology. 2019; 26(4):439-457. https://doi.org/10.3747/co.26.4951

Chicago/Turabian Style

Squires, J.E., S.N. Simard, S. Asad, D. Stacey, I.D. Graham, M. Coughlin, M. Clemons, J.M. Grimshaw, J. Zhang, J.M. Caudrelier, and et al. 2019. "Exploring Reasons for Overuse of Contralateral Prophylactic Mastectomy in Canada" Current Oncology 26, no. 4: 439-457. https://doi.org/10.3747/co.26.4951

APA Style

Squires, J. E., Simard, S. N., Asad, S., Stacey, D., Graham, I. D., Coughlin, M., Clemons, M., Grimshaw, J. M., Zhang, J., Caudrelier, J. M., & Arnaout, A. (2019). Exploring Reasons for Overuse of Contralateral Prophylactic Mastectomy in Canada. Current Oncology, 26(4), 439-457. https://doi.org/10.3747/co.26.4951

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