Factors Influencing Efficacy of Nutrition Education Interventions: A Systematic Review
Correspondence information about the author PhD, RDN Mary W. Murimi
Email the author PhD, RDN Mary W. Murimi
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Figure
Flow diagram illustrating the article filtering process as part of the systematic review. GEMs indicates Great Educational Materials.
Abstract
Objective
To examine systematically factors that contribute to the efficacy of nutrition education interventions in promoting behavior change for good health based on their stated objective. In a departure from previous reviews, the researchers investigated factors that lead to success of various types of interventions. Critical analysis of these factors constituted the outcome of this review.
Methods
This study followed Preferred Reporting Items for Systematic Reviews and Meta-analysis criteria. A total of 246 original articles published between 2009 and 2015 in PubMed, Medline, Web of Science, Academic Search Complete, Science Direct, Cochrane Reviews, ERIC, and PsychLIT were initially considered. The number was screened and scaled down to 40 publications for the final analysis. Quality assessment was based on the Cochrane Handbook for Systematic Reviews of Intervention. Studies were rated as having low risk of bias, moderate risk, or high risk.
Results
Efficacy of nutrition education interventions depended on major factors: interventions that lasted ≥5 months; having ≤3 focused objectives; appropriate design and use of theories; fidelity in interventions; and support from policy makers and management for worksite environmental interventions.
Conclusions and Implications
Intervention duration of ≥5 months, ≤3 focused objectives, randomization, use of theories, and fidelity are factors that enhance success of interventions based on the results of this study.
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Conflict of Interest Disclosure: The authors' conflict of interest disclosures can be found online with this article on www.jneb.org. The first author of this article (M. W. Murimi) served on the JNEB staff as Associate Editor. Review of this article was handled, exclusively, by the Editor-in-Chief to minimize conflict of interest.
