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Comment on Meta-analyses and the Problems of Duplicate Publication and Plagiarism by tekija

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This topic is certainly imporant. Luckily, not many putative double publications seem to have passed the meta-analystic filters, which speaks well of most scholars performing them. In fact, if statements such as PRISMA are followed and the work is done carefully enough doublets should come up in the routine process of meta-analysis..

I have two issues with the Choi et al. paper that I would have brought up had I reviewed their manuscript.

First, it would have been important to add analysis and not be so descriptive: discuss why the meta-analyses did not notice the duplication while Choi et al. did. Were they for some reason harder to detect? Did these studies adhere to specific guideline?. Would those guidelines need amendments? Were these meta-analyses performed with generally less rigor? Because Choi et al. seemingly do not identify the partially faulty papers, we can not make a judgement about these aspects. Post publication peer review of their findings and conclusions is impossible.

Second, they do not mention whether the meta-analyses that included duplicate publications and thus were biased according to their opinion have been brought to the attention of the respective journals and editors for consideration of publishing a correction or even a retraction. If not, have the authors pointed out the alledged faults in PubPeer or a similar forum to fellow scientists. If not, they likely have partially failed to maintain scientific integrity.


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