Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review

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...

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Main Authors: Kirsti I. Toivonen, Tamara M. Williamson, Linda E. Carlson, Lauren M. Walker, Tavis S. Campbell
Format: Article
Language:English
Published: MDPI AG 2020-12-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/13/1/107
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author Kirsti I. Toivonen
Tamara M. Williamson
Linda E. Carlson
Lauren M. Walker
Tavis S. Campbell
author_facet Kirsti I. Toivonen
Tamara M. Williamson
Linda E. Carlson
Lauren M. Walker
Tavis S. Campbell
author_sort Kirsti I. Toivonen
collection DOAJ
description 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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spelling doaj.art-c1cf0a8157f141d2b38d862dfa44b0602023-11-21T07:31:49ZengMDPI AGCancers2072-66942020-12-0113110710.3390/cancers13010107Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic ReviewKirsti I. Toivonen0Tamara M. Williamson1Linda E. Carlson2Lauren M. Walker3Tavis S. Campbell4Department of Psychology, University of Calgary, Calgary, AB T2N 1N4, CanadaDepartment of Psychology, University of Calgary, Calgary, AB T2N 1N4, CanadaDepartment of Oncology, University of Calgary, Calgary, AB T2N 1N4, CanadaDepartment of Oncology, University of Calgary, Calgary, AB T2N 1N4, CanadaDepartment of Psychology, University of Calgary, Calgary, AB T2N 1N4, CanadaAdjuvant 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.https://www.mdpi.com/2072-6694/13/1/107reviewadherencebreast canceradjuvant endocrine therapy
spellingShingle Kirsti I. Toivonen
Tamara M. Williamson
Linda E. Carlson
Lauren M. Walker
Tavis S. Campbell
Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review
Cancers
review
adherence
breast cancer
adjuvant endocrine therapy
title Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review
title_full Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review
title_fullStr Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review
title_full_unstemmed Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review
title_short Potentially Modifiable Factors Associated with Adherence to Adjuvant Endocrine Therapy among Breast Cancer Survivors: A Systematic Review
title_sort potentially modifiable factors associated with adherence to adjuvant endocrine therapy among breast cancer survivors a systematic review
topic review
adherence
breast cancer
adjuvant endocrine therapy
url https://www.mdpi.com/2072-6694/13/1/107
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