Evidence-Based Complementary and Alternative Medicine

Evidence-Based Complementary and Alternative Medicine / 2009 / Article

Commentary | Open Access

Volume 6 |Article ID 684745 | 2 pages | https://doi.org/10.1093/ecam/nem164

Between-Groups Study Designs Demand Between-Groups Analyses: A Response to Hernandez-Reif, Shor-Posner, Baez, Soto, Mendoza, Castillo, Quintero, Perez, and Zhang

Received15 Jun 2007
Accepted19 Sep 2007

Abstract

The most recent massage therapy (MT) study by Hernandez-Reif et al. displays flaws persistent in this area of research that are attributable to MT researchers’ frequent mistake of using within-group analyses of dependent variables in studies that are purported to be randomized control trials. This practise violates the logic of using randomization to create treatment and control groups, and thereby fails to control for the validity threats of spontaneous remission, placebo effects, and statistical regression. The result is that a clear understanding of what MT can and cannot do is seriously hampered.

Copyright © 2009 Christopher A. Moyer. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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