Loading...
Although childhood obesity is a major health problem, relatively little is known about its incidence. Investigators examined weight and body-mass index (BMI) in 7738 kindergarten children followed for 9 years in the Early Childhood Longitudinal Study (1998–2007).
At a mean age of 5.6 years, 15% of children were overweight (BMI >85th percentile), and 12% were obese (>95th percentile). The prevalence of obesity reached 21% by eighth grade (mean age, 14 years); prevalence had increased by 65% in non-Hispanic white children, 50% in Hispanic children, and 120% in non-Hispanic black children. At all ages, children in the next-to-poorest socioeconomic quintile and children with the highest birth weight (>4000 g) had the highest prevalence of obesit…