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Competitive testing of health behavior theories: how do benefits, barriers, subjective norm, and intention influence mammography behavior?


ABSTRACT: Competitive hypothesis testing may explain differences in predictive power across multiple health behavior theories.We tested competing hypotheses of the Health Belief Model (HBM) and Theory of Reasoned Action (TRA) to quantify pathways linking subjective norm, benefits, barriers, intention, and mammography behavior.We analyzed longitudinal surveys of women veterans randomized to the control group of a mammography intervention trial (n = 704). We compared direct, partial mediation, and full mediation models with Satorra-Bentler ? (2) difference testing.Barriers had a direct and indirect negative effect on mammography behavior; intention only partially mediated barriers. Benefits had little to no effect on behavior and intention; however, it was negatively correlated with barriers. Subjective norm directly affected behavior and indirectly affected intention through barriers.Our results provide empiric support for different assertions of HBM and TRA. Future interventions should test whether building subjective norm and reducing negative attitudes increases regular mammography.

SUBMITTER: Murphy CC 

PROVIDER: S-EPMC3941986 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature

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Competitive testing of health behavior theories: how do benefits, barriers, subjective norm, and intention influence mammography behavior?

Murphy Caitlin C CC   Vernon Sally W SW   Diamond Pamela M PM   Tiro Jasmin A JA  

Annals of behavioral medicine : a publication of the Society of Behavioral Medicine 20140201 1


<h4>Background</h4>Competitive hypothesis testing may explain differences in predictive power across multiple health behavior theories.<h4>Purpose</h4>We tested competing hypotheses of the Health Belief Model (HBM) and Theory of Reasoned Action (TRA) to quantify pathways linking subjective norm, benefits, barriers, intention, and mammography behavior.<h4>Methods</h4>We analyzed longitudinal surveys of women veterans randomized to the control group of a mammography intervention trial (n = 704). W  ...[more]

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