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 and Agnew, Sommer and Crawford, Megan and Dixon, Diane and MacPherson, Iain and Fleming, Leanne (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. pp. 147-159. ISSN 0960-9776 (https://doi.org/10.1016/j.breast.2021.05.005)

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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.

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