Healthy Skepticism Library item: 15761

Warning: This library includes all items relevant to health product marketing that we are aware of regardless of quality. Often we do not agree with all or part of the contents.

Publication type: Journal Article

Sridharan L, Greenland P.
Editorial Policies and Publication Bias: The Importance of Negative Studies
Arch Intern Med. 2009 Jun 8; 169:(11):1022-1023
http://archinte.ama-assn.org/cgi/content/short/169/11/1022

Abstract:

Publication bias is the tendency for certain kinds of studies, typically those showing a significant positive result in a clinical trial or an observational study, to receive more favorable publication decisions than equally well-conducted studies that report a negative or null result.1-4 Authors, editors, and peer reviewers all participate in this favoritism toward publication of positive results. An obvious outcome of the bias toward overpublication of positive results is that many treatments or exposures are overrated in the published literature. Some critics have gone so far as to claim that publication bias results in “most published research findings” being “false.“5 Although most researchers, reviewers, and editors would probably believe that such a claim is far too harsh, an unquestioned result of the overwhelming bias to publish mostly positive studies is that subsequent meta-analyses are distorted and result in promoting existing scientific biases. The Cochrane . . .