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In the Original Investigation titled “Effects of Psilocybin-Assisted Therapy on Major Depressive Disorder: A Randomized Clinical Trial,”1 published online on November 4, 2020, there was an error in the response rate for the overall sample, which was marginally higher than reported (67% should have been 71%), and errors in several Cohen d and 95% CI values in the Abstract Results, Results section, and captions for Figures 3 and 4. There are additional corrections in eTables 1 and 2 and eFigures 1 to 9 in the Supplement. A Letter of Explanation2 has been published that explains the errors. This article was corrected online.
Errors in Response Rate, Effect Sizes, and Confidence Intervals. JAMA Psychiatry. 2021;78(5):569. doi:10.1001/jamapsychiatry.2020.4714
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