CMAJ • January 29, 2008; 178 (3). doi:10.1503/cmaj.1070163.
© 2008 Canadian Medical Association or its licensors
All editorial matter in CMAJ represents the opinions of the authors and not necessarily those of the Canadian Medical Association.
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Letters

Controls in studies of magnetism

Max H. Pittler, MD PhD

Deputy Director, Complementary Medicine, Peninsula Medical School, Universities of Exeter and Plymouth, Exeter, UK

[One of the authors responds:]

We welcome Peter McCarthy's comments. As we reported in our article, the primary analysis in our study included only trials that compared magnets and a nonmagnetic placebo.1 There was no significant difference in pain reduction between the magnet and placebo groups as measured on a 100-mm visual analogue scale, which was defined as the primary outcome. The evidence does not support the use of static magnets for pain relief.

Footnotes

Competing interests: None declared.


REFERENCE

  1. Pittler MH, Brown EM, Ernst E. Static magnets for reducing pain: systematic review and meta-analysis of randomized trials. CMAJ 2007;177:736-42.[Abstract/Free Full Text]




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