In the article titled “Effect of Testosterone Treatment on Volumetric Bone Density and Strength in Older Men With Low Testosterone: A Controlled Clinical Trial” by Snyder et al,1 the legend to Figure 3 incorrectly stated that the error bars represent standard deviations; they actually represent 95% confidence intervals. This article has been corrected online. This article was also corrected on April 3, 2017, to fix errors in the conflict of interest disclosures and author affiliations.2