Applying the theory of planned behavior to examine adjuvant endocrine therapy adherence intentions
Entity
UAM. Departamento de Psicología Social y MetodologíaPublisher
WileyDate
2018-10-18Citation
10.1002/pon.4931
Psycho‐Oncology 28 (2019): 187-194
ISSN
1057-9249 (print); 1099-1611 (online)DOI
10.1002/pon.4931Funded by
National Center for Advancing Translational Sciences (KL2TR001432) National Cancer Institute (R01CA154848)Editor's Version
https://doi.org/10.1002/pon.4931Subjects
breast cancer; adjuvant endocrine therapy; adherence; emotions; theory of planned behavior; PsicologíaRights
© 2018 John Wiley & Sons, Ltd.Abstract
Objective:Adherence to adjuvant endocrine therapy (AET) in breast cancersurvivors is suboptimal. Using the theory of planned behavior (TPB), this study aimedto identify the strongest predictors from theTPB of AET intentions and past behaviorand assessed whether ambivalence and anticipatory emotions increased thepredictive capacity of TPB.Methods:Two hundred eighty women diagnosed with hormone positive (HR+)breast cancer who filled at least one prescription of AET responded to a surveymeasuring TPB constructs, attitudinal ambivalence, and anticipatory emotions. Theoutcomes were intentions to adhere to AET and past medication adherence (previous2 weeks).Results:TheTPB explained 66% of intentions to adhere to AET (P< 0.001). Ambiva-lence did not improve theTPB model's predictive value. When emotions were includedwithTPB, the model explained 70% of adherence intentionsF11,226= 52.84,P< 0.001(R2c= .70). This increase of 4% in predictability was statistically significant (ΔR2= 0.04),F6, 226= 7.90,P< 0.001. Women who self‐reported nonadherence in the past 2 weeksdiffered significantly in theTPB variables, ambivalence, and anticipatory emotions fromadherent women. Nonadherent participants reported lower‐future intentions toadhereF1, 236= 5.63,P= 0.018.Conclusions:Results suggest key concepts, such as anticipatory positive emotionsthat should be addressed in future interventions to enhance AET adherenceand survivorship
Files in this item
Google Scholar:Hurtado-de-Mendoza, Alejandra
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Carrera Levillain, Pilar
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Parrott, W. Gerrord
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Gómez‐Trillos, Sara
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Perera, Robert A.
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Sheppard, Vanessa B.
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