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Canonical Source · meta analysis
This page documents how this source is reused across Claim by Claim. A source can support, challenge, qualify or contextualize different claims; appearing here does not imply endorsement of every linked proposition.
Evidence context
Evidence roles describe what this source helps establish inside each Investigation. They are local to that use, not permanent labels attached to the publication itself.
Investigation
An updated individual-patient-data meta-analysis of 39 trials and 20,827 patients found acupuncture superior to sham and no-acupuncture controls across four chronic pain categories, with an effect around 0.2 SD versus sham.
Subject families