Are the effects of homeopathy attributable to a statistical artefact?

Rainer Lüdtke, Claudia Witt, Stefan N. Willich & Thomas Ostermann
Background: Several outcome studies, mostly designed as uncontrolled cohort studies, have found that an individualised homeopathic treatment has marked beneficial health effects, be them specific or unspecific. These results however are likely to be biased by regression to the mean (RTM), a statistical[for full text, please go to the a.m. URL]