The following article from Pharmaceutical Statistics, Sodium cromoglicate: an ineffective drug or meta-analysis misused? by M. T. Stevens, A. M. Edwards, J. B. L. Howell published online on 15 March 2007 in Wiley InterScience (www.interscience.wiley.com), has been retracted by agreement between the author, the journal Editor in Chief, Steven Julious, and John Wiley & Sons, Ltd. The retraction has been agreed because the article is not yet ready for publication and an early version without revisions was published in error. Replacement article pending. Copyright (c) 2007 John Wiley & Sons, Ltd.