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  • Title: Obesity among US urban preschool children: relationships to race, ethnicity, and socioeconomic status.
    Author: Whitaker RC, Orzol SM.
    Journal: Arch Pediatr Adolesc Med; 2006 Jun; 160(6):578-84. PubMed ID: 16754818.
    Abstract:
    OBJECTIVES: To determine whether there are racial/ethnic differences in the prevalence of obesity among preschool children and to determine whether these differences are explained by socioeconomic factors. DESIGN: Cross-sectional assessment. SETTING: Twenty large US cities, from 2001 to 2003. PARTICIPANTS: Of the 4898 children enrolled at birth in the Fragile Families and Child Well-being Study, we analyzed data for the 2452 who, at the age of 3 years, had their height and weight measured during a maternal survey. MAIN EXPOSURES: Three socioeconomic indicators were the main exposures-maternal education, household income, and children's food security status, as assessed by the US Household Food Security Survey Module. MAIN OUTCOME MEASURE: Obesity, defined as a body mass index at the 95th percentile or higher for age and sex. RESULTS: Of the mothers, 41.0% had education beyond high school, 52.9% of households had an income above the federal poverty threshold, and 79.5% of the children were food secure. The prevalence of obesity was 25.8% among Hispanics (any race), 16.2% among blacks, and 14.8% among whites. Compared with whites, the odds of obesity were significantly higher in Hispanics (odds ratio, 2.00; 95% confidence interval, 1.46-2.73), but not in blacks (odds ratio, 1.10; 95% confidence interval, 0.82-1.48). Neither of these odds ratios changed meaningfully after adjusting for all 3 socioeconomic indicators (Hispanics: odds ratio, 1.86 [95% confidence interval, 1.33-2.60]; and blacks: odds ratio, 1.07 [95% confidence interval, 0.78-1.47]). CONCLUSION: In a sample of preschool children drawn from 20 large US cities, the high prevalence of obesity among Hispanics relative to blacks or whites was not explained by racial/ethnic differences in maternal education, household income, or food security.
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