Correction
There was an error in the article “Risk Factors for the Onset of Eating Disorders in Adolescent Girls: Results of the McKnight Longitudinal Risk Factor Study” by the McKnight Investigators (Am J Psychiatry 2003; 160:248–254). On page 251, paragraph one under Arizona Site, the number of students in the sample that developed eating disorders was 19 of 590, or 3.2%.