Coding and Classification Errors in Study of Psilocybin Services - Takeaways - MDSpire

Errors in Coding and Classification in Research on Psilocybin Services

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1

The Original Investigation on Oregon state-regulated psilocybin services was published in JAMA Network Open on August 19, 2026.
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The authors identified a coding error that misclassified participants’ reasons for seeking services.
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A small number of participants were incorrectly categorized as having “other” race.
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The article initially reported 2 more participants with lifetime psilocybin use than the corrected count.
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The authors described the errors and corrections in a Comment, and the article’s text, tables, and supplement were corrected.