Childhood obesity is a growing health problem in the United States that has captured the attention of researchers, policymakers, and practitioners. The prevalence of overweight and obesity at all ages differs by race/ethnicity.

This article describes the study design, data collection methods, 24-hour dietary recall protocol, and sample characteristics.

This report from the field describes the design, implementation, and early evaluation results of the Healthy Weight Collaborative, a federally supported learning collaborative to develop, test, and disseminate an integrated change package of six promising, evidence-based clinical and...