In the Original Investigation entitled “Blood Pressure Trajectories in Early Adulthood and Subclinical Atherosclerosis in Middle Age” published in the February 5, 2014, issue of JAMA (2014;311:490-497. doi:10.1001/jama.2013.285122), the wrong unit was provided for measurement of coronary artery calcification. Instead of Hounsfield units (HU), the correct unit of measure is Agatston units (AU). In the accompanying Editorial entitled “Early Patterns of Blood Pressure Change and Future Coronary Atherosclerosis” (2014;311:471-472. doi:10.1001/jama.2013.285123), the same change applies. Additionally, in the Original Investigation, grant RO1 HL098445 from the National Heart, Lung, and Blood Institute was omitted from the Funding/Support section. These articles have been corrected online.