Objectives. This study identified mediators of a school-based nutrition intervention for 4th-graders and their parents.
Methods. Ten variables were tested to determine whether they satisfied four conclusions necessary to establish mediation of intervention effects on fruit and vegetable consumption in 4th graders (N=1380). Fruit and vegetable consumption was measured in children using 24-hour diet recalls. Mediators were assessed using questionnaire instruments completed by the 4th-graders and their parents.
Results. All four conclusions to establish mediation were met for two variables, perceived self-efficacy and positive outcome expectancies. Knowledge and teacher social norms were modified by the intervention but were not related to fruit and vegetable consumption. The remaining six variables were not changed by the intervention. After controlling for the potential mediators, the intervention term remained significant suggesting the presence of mediators omitted from the original model.
Conclusions. Perceived self-efficacy and positive outcome expectancies should be used to strengthen nutrition interventions. Future mediational analyses, and the creation of a national database of mediators, are crucial for increasing the strength and efficiency of public health nutrition programs.
Learning Objectives: At the conclusion of the session, the participant in this session will be able to: understand the concept and importance of mediational analysis, specifically with regard to analysis of a school-based nutrition intervention
Keywords: School-Based Programs, Nutrition
Presenting author's disclosure statement:
Organization/institution whose products or services will be discussed: None
I do not have any significant financial interest/arrangement or affiliation with any organization/institution whose products or services are being discussed in this session.