In the Research Letter titled “Variations in Surgical Safety According to Affiliation Status With a Top-Ranked Hospital,” which published online July 11, 2019,1 there was an error in the Results section and Table. In the first sentence of the Results section, the number of patients should be 73 680 not 2729. The P value for the last row of the Table (ie, All procedures) should be .06 not .10. This article was corrected online.