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dc.contributor.authorZoellner, Jamie
dc.contributor.authorPorter, Kathleen J.
dc.contributor.authorChen, Yi-Chun Yvonnes
dc.contributor.authorHedrick, Valisa E.
dc.contributor.authorYou, Wen
dc.contributor.authorHickman, Maja
dc.contributor.authorEstabrooks, Paul A.
dc.identifier.citationZoellner, J. M., Porter, K. J., Chen, Y., Hedrick, V. E., You, W., Hickman, M., & Estabrooks, P. A. (2017). Predicting sugar-sweetened behaviours with theory of planned behaviour constructs: Outcome and process results from the SIPsmartER behavioural intervention. Psychology & Health, 32(5), 509–529.
dc.description.abstractObjective Guided by the theory of planned behaviour (TPB) and health literacy concepts, SIPsmartER is a six-month multicomponent intervention effective at improving SSB behaviours. Using SIPsmartER data, this study explores prediction of SSB behavioural intention (BI) and behaviour from TPB constructs using: (1) cross-sectional and prospective models and (2) 11 single-item assessments from interactive voice response (IVR) technology.

Design Quasi-experimental design, including pre- and post-outcome data and repeated-measures process data of 155 intervention participants.

Main Outcome Measures Validated multi-item TPB measures, single-item TPB measures, and self-reported SSB behaviours. Hypothesised relationships were investigated using correlation and multiple regression models.

Results TPB constructs explained 32% of the variance cross sectionally and 20% prospectively in BI; and explained 13–20% of variance cross sectionally and 6% prospectively. Single-item scale models were significant, yet explained less variance. All IVR models predicting BI (average 21%, range 6–38%) and behaviour (average 30%, range 6–55%) were significant.

Conclusion Findings are interpreted in the context of other cross-sectional, prospective and experimental TPB health and dietary studies. Findings advance experimental application of the TPB, including understanding constructs at outcome and process time points and applying theory in all intervention development, implementation and evaluation phases.
dc.publisherTaylor & Francisen_US
dc.rightsThis is an Accepted Manuscript of an article published by Taylor & Francis in Psychol Health on May 2017, available online:
dc.subjectTheory of planned behaviouren_US
dc.subjectBehavioural researchen_US
dc.subjectQuasi experimentalen_US
dc.subjectRural populationen_US
dc.titlePredicting sugar-sweetened behaviours with theory of planned behaviour constructs: Outcome and process results from the SIPsmartER behavioural interventionen_US
kusw.kuauthorChen, Yvonnes
kusw.oaversionScholarly/refereed, author accepted manuscripten_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US

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