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  • Theory of planned behavior and adherence in chronic illness: a meta-analysis

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    HaggerPUB1031.pdf (546.1Kb)
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    Accepted Manuscript (AM)
    Author(s)
    Rich, Antonia
    Brandes, Kim
    Mullan, Barbara
    Hagger, Martin S
    Griffith University Author(s)
    Hagger, Martin S.
    Year published
    2015
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    Abstract
    Social-cognitive models such as the theory of planned behavior have demonstrated efficacy in predicting behavior, but few studies have examined the theory as a predictor of treatment adherence in chronic illness. We tested the efficacy of the theory for predicting adherence to treatment in chronic illness across multiple studies. A database search identified 27 studies, meeting inclusion criteria. Averaged intercorrelations among theory variables were computed corrected for sampling error using random-effects meta-analysis. Path-analysis using the meta-analytically derived correlations was used to test theory hypotheses and ...
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    Social-cognitive models such as the theory of planned behavior have demonstrated efficacy in predicting behavior, but few studies have examined the theory as a predictor of treatment adherence in chronic illness. We tested the efficacy of the theory for predicting adherence to treatment in chronic illness across multiple studies. A database search identified 27 studies, meeting inclusion criteria. Averaged intercorrelations among theory variables were computed corrected for sampling error using random-effects meta-analysis. Path-analysis using the meta-analytically derived correlations was used to test theory hypotheses and effects of moderators. The theory explained 33 and 9 % of the variance in intention and adherence behavior respectively. Theoretically consistent patterns of effects among the attitude, subjective norm, perceived behavioral control, intention and behavior constructs were found with small-to-medium effect sizes. Effect sizes were invariant across behavior and measurement type. Although results support theory predictions, effect sizes were small, particularly for the intention-behavior relationship.
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    Journal Title
    Journal of Behavioral Medicine
    Volume
    38
    Issue
    4
    DOI
    https://doi.org/10.1007/s10865-015-9644-3
    Copyright Statement
    © 2015 Springer US. This is an electronic version of an article published in Journal of Behavioral Medicine, August 2015, Volume 38, Issue 4, pp 673–688. Journal of Behavioral Medicine is available online at: http://link.springer.com/ with the open URL of your article.
    Subject
    Biomedical and clinical sciences
    Psychology
    Publication URI
    http://hdl.handle.net/10072/171886
    Collection
    • Journal articles

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