Prevalence of Plagiarism in Recent Submissions to the Croatian Medical Journal
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To assess the prevalence of plagiarism in manuscripts submitted for publication in the Croatian Medical Journal (CMJ). All manuscripts submitted in 2009–2010 were analyzed using plagiarism detection software: eTBLAST, CrossCheck, and WCopyfind. Plagiarism was suspected in manuscripts with more than 10% of the text derived from other sources. These manuscripts were checked against the Déjà vu database and manually verified by investigators. Of 754 submitted manuscripts, 105 (14%) were identified by the software as suspicious of plagiarism. Manual verification confirmed that 85 (11%) manuscripts were plagiarized: 63 (8%) were true plagiarism and 22 (3%) were self-plagiarism. Plagiarized manuscripts were mostly submitted from China (21%), Croatia (14%), and Turkey (19%). There was no significant difference in the text similarity rate between plagiarized and self-plagiarized manuscripts (25% [95% CI 22–27%] vs. 28% [95% CI 20–33%]; U = 645.50; P = 0.634). Differences in text similarity rate were found between various sections of self-plagiarized manuscripts (H = 12.65, P = 0.013). The plagiarism rate in the Materials and Methods (61% (95% CI 41–68%) was higher than in the Results (23% [95% CI 17–36%], U = 33.50; P = 0.009) or Discussion (25.5 [95% CI 15–35%]; U = 57.50; P < 0.001) sections. Three authors were identified in the Déjà vu database. Plagiarism detection software combined with manual verification may be used to detect plagiarized manuscripts and prevent their publication. The prevalence of plagiarized manuscripts submitted to the CMJ, a journal dedicated to promoting research integrity, was 11% in the 2-year period 2009–2010.
KeywordsResearch Ethics Peer review Plagiarism Self-plagiarism Scientific misconduct Research integrity Software
Croatian Medical Journal
Committee on Publication Ethics
- Bilic-Zulle, L. (2010). Responsible writing in science. Biochemia Medica, 20(3), 279–281.Google Scholar
- Bilić-Zulle, L., Frković, V., Turk, T., Ažman, J., & Petrovečki, M. (2005). Prevalence of plagiarism among medical students. Croatian Medical Journal, 45(1), 126–131.Google Scholar
- Bloomfield, L. (2004). WCopyfind program instructions. http://plagiarism.bloomfieldmedia.com/z-wordpress/software/wcopyfind-instructions/. Accessed 7 September 2011.
- British Medical Journal. (n.d.). Redundant publication. http://resources.bmj.com/bmj/authors/article-submission/. Accessed 12 July 2011.
- COPE. (2006). COPE flowchart. http://www.publicationethics.org/files/u2/All_flowcharts.pdf . Accessed 4 July 2011.
- Croatian Medical Journal. Guidelines for authors: Manuscript preparation and submission. http://www.cmj.hr/2011/52/1/CMJ_52(1)_GUIDELINES.pdf. Accessed 4 July 2011.
- CrossCheck. CrossCheck. http://www.crossref.org/crosscheck.html. Accessed 14 July 2011.
- Errami, M., Wren, J. D., Hicks, J. M., & Garner, H. R. (2007). eTBLAST: A web server to identify expert reviewers, appropriate journals and similar publications. Nucleic Acids Research. doi:10.193/nar/gkm221.
- Errami, M., Zhaohui, S., Long, T. C., George, A. C., & Garner, H. R. (2009). Déjà vu: A database of highly similar citations in the scientific literature. Nucleic Acids Research. doi:10.1093/nar/gkn546.
- Kerans, M. E., & Jager, M. (2010). Handling plagiarism at the manuscript editor’s desk. European Science Editing, 36(3), 62–65.Google Scholar
- Marusic, A. (2010). Editors as gatekeepers of responsible science. Biochemia Medica, 20(3), 282–287.Google Scholar
- Mason, R. (2009). Plagiarism in scientific publications. Journal of Infections Developing Countries, 3(1), 1–4. http://www.jidc.org/index.php/journal/article/view/19749442/46. Accessed 15 July 2011.
- ORI. (2000). Office of the President, Office of Science and Technology Policy: Federal research misconduct policy. Federal Register, 65, 76260–76264. http://ori.hhs.gov/policies/fed_research_misconduct.shtml. Accessed 7 September 2011.
- Petrovečki, M., & Scheetz, M. D. (2001). Croatian medical journal introduces culture, control, and the study of research integrity. Croatian Medical Journal, 42(1), 7–13.Google Scholar
- Pupovac, V., Bilic-Zulle, L., Mavrinac, M., & Petrovecki, M. (2010). Attitudes toward plagiarism among pharmacy and medical biochemistry students—Cross-sectional survey study. Biochemia Medica, 20(3), 307–313.Google Scholar
- Roig, M. (2010). Plagiarism and self-plagiarism: What every author should know. Biochemia Medica, 20(3), 295–300.Google Scholar
- Segal, S., Gelfand, B. J., Hurwitz, S., Berkowitz, L., Ashley, S. W., Nadel, E. S., et al. (2010). Plagiarism in residency application essays. Annals of Internal Medicine, 153(2), 112–120.Google Scholar
- Sorokina, D., Gehrke, J., Warner, S., & Ginsparg, P. (2006). Plagiarsim detection in arXiv. In Proceedings of ICDM (pp. 1070–1075). http://arxiv.org/ftp/cs/papers/0702/0702012.pdf. Accessed 12 July 2011.
- Sun, Z., Errami, M., Long, T., Renard, C., Choradia, N., & Garner, H. (2010). Systematic characterizations of text similarity in full text biomedical publications. Plos One. doi:10.1371/journal.pone.0012704.
- Wager, E. (2011). How should editors respond to plagiarism? COPE discussion paper. http://publicationethics.org/resources/discussion-documents. Accessed 12 September 2011.