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Cardiovascular Research 2004 61(2):201-203; doi:10.1016/j.cardiores.2003.11.023
© 2004 by European Society of Cardiology
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Copyright © 2004, European Society of Cardiology

Impact factors: no totum pro parte by skewness of citation

Tobias Opthofa,*, Ruben Coronelb and Hans Michael Piperc

aDepartment of Medical Physiology, University Medical Center Utrecht, PO Box 85060, 3508 AB Utrecht, The Netherlands
bMolecular and Experimental Cardiology Group, Academic Medical Center, Amsterdam, The Netherlands
cInsitute of Physiology, Justus Liebig University, Giessen, Germany

* Corresponding author. Tel.: +31-30-2538900; fax: +31-30-2539036. t.opthof@med.uu.nl

Received 10 October 2003; revised 15 November 2003; accepted 21 November 2003

The first 150 words of the full text of this article appear below.

Citation of the various papers published in one and the same journal is highly skewed. Journals with a high impact factor obtain this high value by frequent citation of only a limited number of their papers and, on the other hand, journals with low impact factors publish many papers that remain uncited [1]. Thus, mere publication of a paper in a given journal cannot be regarded as a quality marker of that particular paper [2], it just means that the authors have ‘succeeded in surviving’ the review process of that journal. Seglen [3] has analyzed that 50% of the obtained citations are accumulated by only 15% of the contents of a journal. In addition, the most frequently cited 50% of the contents obtain almost all citations (90%). These numbers were based on an analysis of three biochemical journals (Biochimica Biophysica Acta, Biochemical Journal and Journal of . . . [Full Text of this Article]


   1. Skewness of citation
 

   2. Skewness of citation and years since publication
 

   3. Skewness of citation and impact
 

   4. Uncited papers
 

   5. Conclusion
 

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