Error in Figure 1

In the Original Investigation titled “Frequency of Adverse Events in the Placebo Arms of COVID-19 Vaccine Trials: A Systematic Review and Meta-Analysis,”¹ published January 18, 2022, the following 2 boxes in Figure 1 were incorrectly transposed: 87 articles were screened, and 27 articles were sought for retrieval. This article has been corrected.¹