Error in Table Column Heading

In the Original Investigation titled “Development and Validation of a Clinically Based Risk Calculator for the Transdiagnostic Prediction of Psychosis,”¹ published online March 29, 2017, there was an error in the third column heading of Table 2. The column heading should read “Harrell C^a.” Additionally, all values in the 2 subcolumns should have a zero in front of the decimal place. This article was corrected online.