Abstract
Most behavior change trials focus on outcomes rather than deconstructing how those outcomes related to programmatic theoretical underpinnings and intervention components. In this report, the process of change is compared for three evidence-based programs’ that shared theories, intervention elements and potential mediating variables. Each investigation was a randomized trial that assessed pre- and post- intervention variables using survey constructs with established reliability. Each also used mediation analyses to define relationships. The findings were combined using a pattern matching approach. Surprisingly, knowledge was a significant mediator in each program (a and b path effects [p<0.01]). Norms, perceived control abilities, and self-monitoring were confirmed in at least two studies (p<0.01 for each). Replication of findings across studies with a common design but varied populations provides a robust validation of the theory and processes of an effective intervention. Combined findings also demonstrate a means to substantiate process aspects and theoretical models to advance understanding of behavior change.
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Acknowledgements
ATLAS research was supported by the National Institute on Drug Abuse grant DA07356. The ATHENA project was supported by the National Institute on Drug Abuse DA11748. PHLAME was supported by the National Institute on Arthritis and Musculoskeletal and Skin Diseases AR45901 and National Cancer Institute CA105774. Dr. Moe was supported by AHRQ K12 HS019456 01. The funders played no role in the design, conduct, or analysis of these studies, nor in the interpretation and reporting of findings. All authors had full access to all of the data and take responsibility for the integrity of the data and the accuracy of the data analysis.
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Conflict of interest
ATLAS and ATHENA are made available for distribution through the Center for Health Promotion Research at Oregon Health & Science University (OHSU). Drs. Elliot and Goldberg have a financial interest in the sale of these products. Since completion of the original research, PHLAME is being enhanced and commercialized through an STTR grant (TR000357). Dr. Goldberg and Dr. Kuehl have a financial interest from the commercial sale of that product. These potential conflicts of interest have been reviewed and managed by the OHSU Conflict of Interest in Research Committee at OHSU. Drs. MacKinnon, Ranby and Moe have no conflict of interest.
Adherence to ethical standards
All procedures, including the informed consent process, were conducted in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000.
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Implications
Practice: A team-centered intervention using peer-led curricula and individual and team level behavioral monitoring appears to be an effective model for health promotion.
Policy: Replication of programs and translation in new settings can be informed by selecting those with confirmed theoretical and process structures.
Research: Combining the patterns of mediation findings across studies can be used to assist filling the knowledge gap concerning defining effective processes of behavior change.
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Elliot, D.L., Goldberg, L., MacKinnon, D.P. et al. Empiric validation of a process for behavior change. Behav. Med. Pract. Policy Res. 6, 449–456 (2016). https://doi.org/10.1007/s13142-015-0343-y
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DOI: https://doi.org/10.1007/s13142-015-0343-y