The Research Letter titled “Prevalence of Excess Adiposity by Body Mass Index Category Among US Children and Adolescents,” published Online First on November 3, 2025, contained errors in the Methods text, references, and Supplement 1. The definition of class 3 obesity was corrected to body mass index (BMI) 140% or greater of 95th percentile or BMI 40 or greater. Furthermore, the citation to the National Institute for Health and Care Excellence guideline on identifying and assessing overweight and obesity in children and young people was corrected to report a publication date of January 14, 2025. This article was corrected online.
