Letter

Review of publication bias in studies on publication bias: Studies on publication bias are probably susceptible to the bias they study

BMJ 2005; 331 doi: http://dx.doi.org/10.1136/bmj.331.7517.637-c (Published 15 September 2005) Cite this as: BMJ 2005;331:637
  1. Fujian Song, reader in research synthesis in chronic illness and rehabilitation ([email protected])
  1. Institute of Health, University of East Anglia, Norwich, NR4 7TJ

    Editor—The empirical evidence about the existence of publication bias is comparatively certain, although the direction and extent of specific types of publication related biases and the consequences of publication bias are much less convincing.1

    Questioning whether studies on publication bias themselves suffer from the bias they studied is reasonable. Dubben and Beck-Bornholdt used …

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