Theory of planned behavior and adherence in chronic illness: a meta-analysis
|dc.identifier.citation||Rich, A. and Brandes, K. and Mullan, B. and Hagger, M. 2015. Theory of planned behavior and adherence in chronic illness: a meta-analysis. Journal of Behavioral Medicine. 38 (4): pp. 673-688.|
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.
|dc.publisher||Springer New York LLC|
|dc.title||Theory of planned behavior and adherence in chronic illness: a meta-analysis|
|dcterms.source.title||Journal of Behavioral Medicine|
The final publication is available at Springer via http://doi.org/10.1007/s10865-015-9644-3
|curtin.department||School of Psychology and Speech Pathology|