Ethnicity and Disease
Objective: To assess body mass index (BMI [kg/m2]) tracking over a four-year period in 4- to 8-year-old Mexican American (MA) children and to explore associations between mother and child's BMI.
Design: A longitudinal study design was used to assess 138 subjects (69 MA children and 69 MA mothers). Children were classified as normal weight if age- and sex-specific BMI was < 85th percentile and overweight or at-risk for overweight if BMI was > or = 85th percentile. Mothers with a BMI < 25 kg/m2 were classified as normal weight and overweight if BMI was > or = 25 kg/m2.
Results: The percentages of children overweight or at-risk for overweight were 34.8%, 36.2%, 40.6% and 39.1% for years 1-4, respectively. A positive correlation was found between the children's BMI status across the four years of the study (r=.90 to .95, P<.001). Furthermore, at-risk for overweight or overweight children in year 1 were highly likely to be overweight or at-risk for overweight in year 4 (adjusted OR: 67.7, 95% CI: 11.7-386.4, P<.001). The correlation coefficients between mothers and daughters' BMIs during the four years were significant (P<.01), but not between mothers and sons' BMIs.
Conclusion: Overweight or at-risk for overweight status tracks well during childhood and early adolescence among low-income MA children. Sex differences were found concerning associations between mother and their child's BMI.
BMI, Children, Mexican American, Mothers
Olvera N, Sharma S, Suminski R, Rodríguez A, Power T. BMI Tracking in Mexican American Children in Relation to Maternal BMI. Ethnicity and Disease. 2007; 17(4).