Prevalence of Obesity and Overweight in EHR-Derived Data and NHANES Data.

aAll proportions for NHANES data were calculated using MEC sample weights; no BMI outliers were excluded in prevalence estimates following NHANES standard practice.bTotal raw samples sizes were 3032 for NHANES and 528,340 for multi-site EHR data.cDifferent visits for a given child may appear in different age subgroups, due to the longitudinal nature of the EHR dataset. Therefore, the fractions of children from each age subgroup do not sum to 1.000.EHR: Electronic Health Record. NHANES: National Health and Nutrition Examination Survey.