Résumé :
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[BDSP. Notice produite par INIST-CNRS 8olGR0x9. Diffusion soumise à autorisation]. Objectives. We examined recent overweight and obesity trends in a multi-ethnic population of low-income preschool children. Methods. We defined overweight as sex-specific body mass index (BMI) - for-age>=85th and<95th percentile and obesity as sex-specific BMI-for-age>=95th percentile, and calculated them using demographic data and randomly selected height and weight measurements that were recorded while 2-to<5-year-old children were enrolled in the New York State (NYS) Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) during 2002-2007. Results. Obesity prevalence peaked at 16.7% in 2003, declined from 2003 through 2005, and stabilized at 14.7% through 2007. Among both boys and girls, the downward trend in annual prevalence of obesity was evident only among Hispanic children (22.8% boys and 20.9% girls in 2002 vs. 19.3% boys and 17.5% girls in 2007) and non-Hispanic black children (15.6% boys and 14.2% girls in 2002 vs. 13.6% boys and 12.4% girls in 2007). In contrast, the annual prevalence estimate for overweight showed an increasing trend from 2002 through 2007. Conclusions. These results showed a slight decline in prevalence of childhood obesity and a continuing rise in prevalence of childhood overweight among children enrolled in the NYS WIC program during 2002-2007. Future research should investigate the extent to which the slight decline in childhood obesity prevalence may be attributable to population-based and high-risk obesity prevention efforts in NYS.
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