Testing mediating variables in a school-based nutrition intervention program.

Objectives: To identify correlates of 6th and 7th graders' (age 10-12 years) fruit and vegetable intake, to investigate parent -child correlations of fruit and vegetable intake, and to compare parents' and children's reports of children's accessibility, skills and preferences with respect to fruit and vegetables. Design: The results presented are based on the baseline survey of the 'Fruits and Vegetables Make the Marks Project', where 38 schools participated. Setting: Fruit and vegetable intake was measured by food frequency questions. Theoretical factors, based on Social Cognitive Theory, potentially correlated to intake were measured, including behavioural skills, accessibility, modelling, intention, preferences, self-efficacy and awareness of 5-a-day recommendations. Subjects: In total, 1950 (participation rate 85%) 6th and 7th graders and 1647 of their parents participated. Results: Overall, 34% of the variance in the pupils' reported fruit and vegetable intake was explained by the measured factors. The strongest correlates to fruit and vegetable intake were preferences and accessibility. The correlation between the children's and their parents' fruit and vegetable intake was 0.23. The parents perceived their children's accessibility to be better than what was reported by the children (P , 0.01), while the children reported their skills to be better than what was perceived by their parents (P , 0.01).

show abstract

“…Also important is studying whether these correlates mediate changes in intake. Such mediation studies are clearly lacking 5,32 .…”

Section: Discussionmentioning

confidence: 99%

Correlates of fruit and vegetable intake among Norwegian schoolchildren: parental and self-reports

Bere

Klepp

2004

Public Health Nutr.

144

124

View full text Add to dashboard Cite

show abstract

“…Analysis of mediators focuses on the effect that an intervention program has on intervening variables and then subsequently examines the link between intervening variables and outcome measures (Baron and Kenny, 1986). This can provide a check on whether interventions changed the targeted intervening variables, extend an understanding of the success or failure of intervention materials, and help to test theories underlying prevention programs (Hansen and McNeal, 1997;Krull and MacKinnon, 1999;MacKinnon 1994;MacKinnon et al 1991;Reynolds et al, 2002). While much information can be gained from mediational analysis, this technique clearly remains underutilized (Baron and Kenny, 1986;MacKinnon et al, 1988;Reynolds et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Revisiting “Success”: Posttrial Analysis of a Gender-Specific HIV/STD Prevention Intervention

et al. 2006

View full text Add to dashboard Cite

Alongside the recognized need to foster the development of innovative gender-specific HIV interventions, researchers face the urgent need to further understand how current interventions do or do not work. Few studies build posttrial qualitative analysis into standardized interview assessments in randomized controlled trials in order to bolster an assessment of how interventions work. The current investigation is a posttrial qualitative analysis carried out on a randomly selected subsample (N=180), representing 50% of women who participated in a 3-arm randomized controlled trial known as Project FIO (The Future Is Ours). FIO was a gender-specific HIV prevention intervention carried out with heterosexually active women in a high seroprevalence area of New York City. Posttrial qualitative results extend an understanding of the success of the trial (e.g., reductions in unsafe sex). Qualitative results reflect how the Modified AIDS Risk Reduction Model operated in the expected direction across experimental groups. Results also highlight women's empowerment narratives, reflecting the salience of bodily and sexual rights aspects of the intervention.

show abstract

“…Adolescents utilize proxy agency when they believe that others, such as parents and school staff, can assist them. Although proxy agency is reflected in self-efficacy assessments, studies of correlates of PA and FV have shown some promise in identifying the proxy agency process of behavior change by developing proxy efficacy scales (Dzewaltowski et al, 2007) and by examining correlates of health behavior with proxy efficacy items in self-efficacy measures (e.g., Reynolds, Yaroch, Franklin, & Maloy, 2002), environmental change efficacy measures (Ryan & Dzewaltowski, 2002), and support-seeking measures (Saunders et al, 1997).…”

mentioning

confidence: 99%

Healthy Youth Places: A Randomized Controlled Trial to Determine the Effectiveness of Facilitating Adult and Youth Leaders to Promote Physical Activity and Fruit and Vegetable Consumption in Middle Schools

et al. 2008

View full text Add to dashboard Cite

The Healthy Youth Places (HYP) intervention targeted increased fruit and vegetable consumption (FV) and physical activity (PA) through building the environmental change skills and efficacy of adults and youth. HYP included group training for adult school site leaders, environmental change skill curriculum, and youth-led FV and PA environment change teams. Sixteen schools were randomized to either implement the HYP program or not. Participants (N =1,582) were assessed on FV and PA and hypothesized HYP program mediators (e.g., proxy efficacy) at the end of sixth grade (baseline), seventh grade (Postintervention Year 1), and eighth grade (Postintervention Year 2). After intervention, HYP schools did not change in FV but did significantly change in PA compared to control schools. Proxy efficacy to influence school PA environments mediated the program effects. Building the skills and efficacy of adults and youth to lead school environmental change may be an effective method to promote youth PA.

show abstract

Testing mediating variables in a school-based nutrition intervention program.

Cited by 77 publications

References 39 publications

Correlates of fruit and vegetable intake among Norwegian schoolchildren: parental and self-reports

Correlates of fruit and vegetable intake among Norwegian schoolchildren: parental and self-reports

Revisiting “Success”: Posttrial Analysis of a Gender-Specific HIV/STD Prevention Intervention

Healthy Youth Places: A Randomized Controlled Trial to Determine the Effectiveness of Facilitating Adult and Youth Leaders to Promote Physical Activity and Fruit and Vegetable Consumption in Middle Schools

Contact Info

Product

Resources

About