In the Original Investigation entitled “Oxygen Saturation Target Range for Extremely Preterm Infants: A Systematic Review and Meta-analysis” published in the April 6, 2015, issue of JAMA Pediatrics (2015;169:332-340. doi:10.1001/jamapediatrics.2014.3307), there was an error in the web-only supplement. In the eFigure, an appendix was mentioned but was missing from the web-only supplement. This missing appendix was renamed eTable 1 and added to the web-only material, and the original eTable was renamed eTable 2. As a result, the first 2 paragraphs of the Results section of the article have been updated to reflect these changes in citations. The new eTable 1 is cited parenthetically in the second sentence of the first paragraph, and the eTable has been renamed eTable 2 and is cited in the second sentence of the second paragraph. This article was corrected online.