The impact of medication side effects on adherence and persistence to hormone therapy in breast cancer survivors: A qualitative systematic review and thematic synthesis

Peddie, Nicola; Agnew, Sommer; Crawford, Megan; Dixon, Diane; MacPherson, Iain; Fleming, Leanne

Abstract

Background
Hormone Therapy (HT) reduces the risk of breast cancer recurrence and mortality in women with breast cancer. Despite these clinical benefits, rates of HT non-adherence and non-persistence are high. Research suggests this may be due to the impact of HT side effects. However, little research has explored the individual contribution of side effects to non-adherence and non-persistence behaviours, thereby hindering the implementation of targeted intervention strategies. Our aim is to review the published literature on breast cancer survivors’ lived experiences of HT side effects and explore how these may be related to non-adherence and non-persistence behaviour.
Methods
Electronic searches were conducted from inception to May 2020, utilising Cochrane CENTRAL, Medline, Embase, Web of Science and PsycINFO databases. Searches included a combination of terms related to breast cancer, adherence, hormone therapy and side effects.
Results
Sixteen eligible papers were identified, and study quality was high. Data were thematically synthesised into four analytical themes, which encompassed 13 descriptive sub-themes: ‘Daily impact of side-effects’, ‘Role of Health Care Professionals’, ‘Managing HT side-effects’, and ‘Weighing up the pros and cons’.
Conclusions
HT side effects significantly impact breast cancer survivor's quality of life. A lack of support from healthcare providers leads to self-management strategies, which negatively affects adherence and persistence behaviour.

Citation

Peddie, N., Agnew, S., Crawford, M., Dixon, D., MacPherson, I., & Fleming, L. (2021). The impact of medication side effects on adherence and persistence to hormone therapy in breast cancer survivors: A qualitative systematic review and thematic synthesis. The Breast, 58, 147-159. https://doi.org/10.1016/j.breast.2021.05.005

• Journal Article Type: Review
• Acceptance Date: May 13, 2021
• Online Publication Date: May 17, 2021
• Publication Date: 2021-08
• Deposit Date: Feb 13, 2023
• Publicly Available Date: Feb 13, 2023
• Print ISSN: 0960-9776
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 58
• Pages: 147-159
• DOI: https://doi.org/10.1016/j.breast.2021.05.005
• Keywords: Adjuvant hormone therapy, Breast cancer, Side effects, Endocrine therapy, Tamoxifen, Aromatase inhibitor, Adherence, Persistence, Qualitative