Cited by 77Medication Adherence and ComplianceCancer survivorship and careBreast Cancer Treatment Studies

Potentially modifiable factors associated with adherence to adjuvant endocrine therapy among breast cancer survivors: a systematic review

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Toivonen, Kirsti, Williamson, Tamara, Carlson, Linda, Walker, Lauren, Campbell, Tavis·2020·Cancers

Abstract

Adjuvant endocrine therapy (AET) reduces risk of breast cancer recurrence. However, suboptimal adherence and persistence to AET remain important clinical issues. Understanding factors associated with adherence may help inform efforts to improve use of AET as prescribed. The present systematic review examined potentially modifiable factors associated with adherence to AET in accordance with PRISMA guidelines (PROSPERO registration ID: CRD42019124200). All studies were included, whether factors were significantly associated with adherence or results were null. This review also accounted for the frequency with which a potentially modifiable factor was examined and whether univariate or multivariate models were used. This review also examined whether methodological or sample characteristics were associated with the likelihood of a factor being associated with AET adherence. A total of 68 articles were included. Potentially modifiable factors were grouped into six categories: side effects, attitudes toward AET, psychological factors, healthcare provider-related factors, sociocultural factors, and general/quality of life factors. Side effects were less likely to be associated with adherence in studies with retrospective or cross-sectional than prospective designs. Self-efficacy (psychological factor) and positive decisional balance (attitude toward AET) were the only potentially modifiable factors examined ≥10 times and associated with adherence or persistence ≥75% of the time in both univariate and multivariate models. Self-efficacy and decisional balance (i.e., weight of pros vs. cons) were the potentially modifiable factors most consistently associated with adherence, and hence may be worth focusing on as targets for interventions to improve AET adherence among breast cancer survivors.

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Authors
Toivonen, K., Williamson, T., Carlson, L., Walker, L., & Campbell, T.
Affiliations
University of Calgary (CA)
Corresponding author
Campbell, Tavis
Venue
Cancers
Publisher
MDPI AG
Published
2020-12-31
Volume
13
Issue
1
Pages
107
ISSN
2072-6694 (ISSN-L)
OpenAlex
W3115995788
Cited by
77
References
112
Citations by year
2026: 11 · 2025: 14 · 2024: 15 · 2023: 20 · 2022: 15 · 2021: 2
FWCI
1.94
Type
journal article
Language
en
Open access
Locations
  • Cancers (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • University of Calgary
  • Alberta Cancer Foundation
  • Killam Trusts
  • Alberta Innovates
  • Canadian Institutes of Health Research
Topics
  • Health Sciences › Medicine › Family Practice › Medication Adherence and Compliance
  • Health Sciences › Medicine › Oncology › Cancer survivorship and care
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
Keywords
adjuvant endocrine therapy, medication adherence, breast cancer survivors, self-efficacy, decisional balance, adverse effects, treatment attitudes, psychological factors, sociocultural factors, quality of life

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