• Brian R Hirshman, Laurie A Jones, Jessica A Tang, James A Proudfoot, Kathleen M Carley, Bob S Carter, and Clark C Chen.
• Division of Neurosurgery, Center for Translational and Applied Neuro-Oncology, University of California, San Diego, California, USA Center for Computational Analysis of Social and Organizational Systems, School of Computer Science, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA Computation, Organizations & Society Program, School of Computer Science, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA.
• J. Neurol. Neurosurg. Psychiatr. 2016 Nov 1; 87 (11): 1248-1250.

AbstractThe core premise of evidence-based medicine is that clinical decisions are informed by the peer-reviewed literature. To extract meaningful conclusions from this literature, one must first understand the various forms of biases inherent within the process of peer review. We performed an exhaustive search that identified articles exploring the question of whether survival benefit was associated with maximal high-grade glioma (HGG) resection and analysed this literature for patterns of publication. We found that the distribution of these 108 articles among the 26 journals to be non-random (p<0.01), with 75 of the 108 published articles (69%) appearing in 6 of the 26 journals (25%). Moreover, certain journals were likely to publish a large number of articles from the same medical academic genealogy (authors with shared training history and/or mentor). We term the tendency of certain types of articles to be published in select journals 'journal bias' and discuss the implication of this form of bias as it pertains to evidence-based medicine.Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

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