Solveig A Cunningham, Michael R Kramer, K M Venkat Narayan
BACKGROUND: Although the increased prevalence of childhood obesity in the United States has been documented, little is known about its incidence. We report here on the national incidence of obesity among elementary-school children. METHODS: We evaluated data from the Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999, a representative prospective cohort of 7738 participants who were in kindergarten in 1998 in the United States. Weight and height were measured seven times between 1998 and 2007...
January 30, 2014: New England Journal of Medicine