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PICO
Question: Among a nationally representative cohort of kindergarten children, what is the annual incidence of obesity through eighth grade?
Question type: Descriptive
Study design: Prospective cohort
Investigators from Emory University sought to determine the incidence of obesity in children by evaluating data from the Early Childhood Longitudinal Study (ECLS). For the ECLS, in 1998–1999 a cohort of kindergarten children were enrolled who were considered to be representative of all kindergarten children in the United States for that school year. ECLS data included measurements of height and weight at 7 time points from kindergarten to the end of eighth grade (age 5–14 years). Additional ECLS data collected included sex, race or ethnic group, socioeconomic status, and birth weight. Using ECLS data, investigators calculated each …
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