Influence of Control Group on Effect Size in Trials of Acupuncture for Chronic Pain: A Secondary Analysis of an Individual Patient Data Meta-Analysis

Abstract

BACKGROUND 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 effect size of acupuncture. METHODS Based on literature searches of acupuncture… (More)
DOI: 10.1371/journal.pone.0093739

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@inproceedings{MacPherson2014InfluenceOC, title={Influence of Control Group on Effect Size in Trials of Acupuncture for Chronic Pain: A Secondary Analysis of an Individual Patient Data Meta-Analysis}, author={Hugh MacPherson and Emily A. Vertosick and George Lewith and Klaus Linde and Karen J. Sherman and Claudia M. Witt and Andrew J. Vickers}, booktitle={PloS one}, year={2014} }