To examine the relationship between childhood obesity and health care use in a large, nationally representative group of children with measured anthropometrics.

Analysis of 5 combined National Health and Nutrition Survey datasets from 2001 to 2010. Unadjusted and adjusted logistic regression models assessed the relationship between health care use variables and weight status (overweight: body mass index 85th to <95th percentile for age and sex; obese: body mass index ≥95th percentile for age and sex) for children 2-18 years of age.

Overweight and obese children are more likely to receive their routine medical care in an emergency department than a primary care setting (overweight OR 1.95; 95% CI 1.22-3.14 and obese OR 1.88; 95% CI 1.24-2.86) than their normal-weight peers. After we adjusted for relevant covariates, this finding persisted among overweight, but not obese, children. Other health care use variables were not significantly associated with weight status.

Overweight children may be more likely to use the emergency department than primary care settings for routine medical care. Interventions to establish primary care medical homes for overweight children merit consideration.