Ethnicity, Household Food Security, and Nutrition and Activity Patterns in Families With Preschool Children.

OBJECTIVE

This study evaluated the relationship between food security and child nutritional intake, sedentary behavior, and body mass index (BMI) and potential moderation by ethnic subgroup membership.

DESIGN

Cross-sectional data analysis from baseline data of a preschool intervention trial.

SETTING

Twenty-eight subsidized child care centers in Miami-Dade County, FL.

PARTICIPANTS

Children ages 2 to 5 (n = 1,211) and their caregivers.

MAIN OUTCOME MEASURE

The BMI percentile and the following 4 factors (via confirmatory factor analysis): food security, consumption of fruits/vegetables, consumption of unhealthy foods, and sedentary behaviors.

ANALYSIS

Separate linear mixed models tested relationships between food security and main outcome measures with an interaction term to test for possible moderation by ethnicity.

RESULTS

Results indicated a significant relationship (P < .05) between food security and child consumption of fruit/vegetables, consumption of unhealthy foods, and sedentary behavior, but not with BMI percentile. With greater food security, Haitians reported greater consumption of fruit/vegetables and sedentary behavior. With greater food security, Cubans and non-Hispanic whites reported less consumption of unhealthy foods, while Haitians reported greater consumption.

CONCLUSIONS AND IMPLICATIONS

Results showed higher food security was associated with higher consumption of fruit/vegetables, consumption of unhealthy foods, and sedentary behavior, but this was moderated by ethnicity. Implications for healthy weight interventions among low-income preschoolers should focus on the importance of food security and tailor intervention strategies for diverse ethnic groups accordingly.