In the Original Investigation titled “Difference in Association of Obesity With Prostate Cancer Risk Between US African American and Non-Hispanic White Men in the Selenium and Vitamin E Cancer Prevention Trial (SELECT)” published online April 16, 2015, in JAMA Oncology (doi:10.1001/jamaoncol.2015.0513), an author’s name appeared with an incorrect academic degree. “Ruth Etzioni, MD” should be replaced with “Ruth Etzioni, PhD.” This article was corrected online.