Publication bias against negative results from clinical trials: three of the seven deadly sins
Richard T Johnson* and Kay Dickersin
Correspondence *The Johns Hopkins Hospital, Pathology 627, Baltimore, MD 21287, USA
Email rtj@jhmi.edu
There is strong evidence that clinical trials with a positive outcome are more likely to be published than are trials with negative results. In this Viewpoint, Richard Johnson and Kay Dickersin explore the reasons for this phenomenon and discuss possible solutions.
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