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    Predicting intention and behaviour following participation in a theory-based intervention to improve gluten free diet adherence in coeliac disease

    234131_234131.pdf (301.1Kb)
    Access Status
    Open access
    Authors
    Sainsbury, K.
    Mullan, Barbara
    Sharpe, L.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sainsbury, K. and Mullan, B. and Sharpe, L. 2015. Predicting intention and behaviour following participation in a theory-based intervention to improve gluten free diet adherence in coeliac disease. Psychology and Health. 30 (9): pp. 1063-1074.
    Source Title
    Psychology and Health
    DOI
    10.1080/08870446.2015.1022548
    ISSN
    0887-0446
    School
    School of Psychology and Speech Pathology
    Remarks

    This is an Author's Original Manuscript of an article published by Taylor & Francis in Psychology and Health on 18/03/2015 available online at <a href="http://www.tandfonline.com/10.1080/08870446.2015.1022548">http://www.tandfonline.com/10.1080/08870446.2015.1022548</a>

    URI
    http://hdl.handle.net/20.500.11937/24941
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 Taylor & Francis. Objective: To determine whether changes in theory of planned behaviour (TPB) constructs could predict intention and gluten-free diet (GFD) adherence following participation in an online theory-based intervention designed to improve adherence in coeliac disease. Design: Theory-based process evaluation of the mechanisms of change over the course of a six-week online intervention. Measures of GFD adherence and TPB variables were administered at baseline and follow-up (immediate post-intervention: n = 74; three-month: n = 68; six-month: n = 65). Hierarchical regression analyses using residualised change scores were conducted at each time point (dependent variables: intention and adherence). Results: Baseline intention and GFD adherence were the strongest predictors of follow-up intention and adherence, respectively. Change in attitude accounted for significant variance in intention. Change in intention accounted for significant variance in GFD adherence immediately post-intervention; by the six-month follow-up change in perceived behavioural control was the stronger predictor. Conclusions: Partial support for the hypotheses suggests that, for certain behaviours, the TPB may be relevant in explaining the mechanism of action responsible for changes in intention and behaviour following participation in a behaviour change intervention. Additional predictive pathways are also likely to exist and, in the area of GFD adherence, may include habit strength and actual behavioural control.

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