Poster Topical Area: Community and Public Health Nutrition
Poster Board Number: 130
To determine whether a parent-child vegetable cooking skills program and parent-led strategies informed by behavioral economics improved dietary and non-dietary outcomes of a racially and ethnically diverse sample of low-income children (ages 9-12) more than a vegetable cooking skills program alone.
A nonrandomized, controlled trial compared a weekly cooking skills program enhanced to emphasize vegetable preparation, procurement and intake (control group) with the same weekly cooking skills program plus parent-led strategies (1/week over 6 weeks) (intervention group). The primary outcomes were total vegetable intake, dietary quality (HEI scores), total energy intake, vegetable liking, variety of vegetables tried, and BMI-z score of the children, as well as home availability of vegetables. Outcome measures were collected at baseline, immediate post-course, 6 and 12 months follow-up. Mixed model regression analysis with fixed independent effects (group, time point, and group x time interaction) compared outcomes between groups. To compare treatment groups over time, 3 change-over-time outcome measurements from baseline to immediate post-course, from baseline to 6-mo follow-up, and from baseline to 12-mo follow-up were created for the primary outcomes. Adjusted mixed models were also used for the change-over-time outcomes. A total of 103 parent/child pairs (intervention = 49, control = 54) were enrolled and 91 (intervention = 44, control = 47) completed the weekly cooking skills program.
The intervention did not improve total vegetable intake, dietary quality, or BMI-z score. Intervention children increased dark green vegetable intake from immediate post-course to 12 months. There were significant between-group differences for number of vegetables tried for all 3 change-over-time measures. Mean vegetable liking decreased over time for both control and intervention children.
The findings from this study suggest the evaluated strategies may not be effective in low-income population and may used to improve behavioral economics-informed in-home interventions. Given the limited research on behavioral economic strategies for improving diet, more research is clearly warranted.
This project was supported by Agriculture and Food Research Initiative Grant no. 2012-68001-19631 from the USDA National Institute of Food and Agriculture. Program Name: Childhood Obesity Prevention: Integrated Research, Education, and Extension to Prevent Childhood Obesity. Program Code: A2101.
University of Minnesota-Twin Cities