Influence of control group on effect size in trials of acupuncture for chronic pain: a secondary analysis of an individual patient data meta-analysis.

<h4>Background</h4>In a recent individual patient data meta-analysis, acupuncture was found to be superior to both sham and non-sham controls in patients with chronic pain. In this paper we identify variations in types of sham and non-sham controls used and analyze their impact on the ef...

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Bibliographic Details
Main Authors: Hugh MacPherson, Emily Vertosick, George Lewith, Klaus Linde, Karen J Sherman, Claudia M Witt, Andrew J Vickers, Acupuncture Trialists' Collaboration
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0093739
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