Selective citation in scientific literature on the human health effects of bisphenol A

Abstract Introduction Bisphenol A is highly debated and studied in relation to a variety of health outcomes. This large variation in the literature makes BPA a topic that is prone to selective use of literature, in order to underpin one’s own findings and opinion. Over time, selective use of literat...

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Main Authors: M. J. E. Urlings, B. Duyx, G. M. H. Swaen, L. M. Bouter, M. P. Zeegers
Format: Article
Language:English
Published: BMC 2019-03-01
Series:Research Integrity and Peer Review
Subjects:
Online Access:http://link.springer.com/article/10.1186/s41073-019-0065-7
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author M. J. E. Urlings
B. Duyx
G. M. H. Swaen
L. M. Bouter
M. P. Zeegers
author_facet M. J. E. Urlings
B. Duyx
G. M. H. Swaen
L. M. Bouter
M. P. Zeegers
author_sort M. J. E. Urlings
collection DOAJ
description Abstract Introduction Bisphenol A is highly debated and studied in relation to a variety of health outcomes. This large variation in the literature makes BPA a topic that is prone to selective use of literature, in order to underpin one’s own findings and opinion. Over time, selective use of literature, by means of citations, can lead to a skewed knowledge development and a biased scientific consensus. In this study, we assess which factors drive citation and whether this results in the overrepresentation of harmful health effects of BPA. Methods A citation network analysis was performed to test various determinants of citation. A systematic search identified all relevant publications on the human health effect of BPA. Data were extracted on potential determinants of selective citation, such as study outcome, study design, sample size, journal impact factor, authority of the author, self-citation, and funding source. We applied random effect logistic regression to assess whether these determinants influence the likelihood of citation. Results One hundred sixty-nine publications on BPA were identified, with 12,432 potential citation pathways of which 808 citations occurred. The network consisted of 63 cross-sectional studies, 34 cohort studies, 29 case-control studies, 35 narrative reviews, and 8 systematic reviews. Positive studies have a 1.5 times greater chance of being cited compared to negative studies. Additionally, the authority of the author and self-citation are consistently found to be positively associated with the likelihood of being cited. Overall, the network seems to be highly influenced by two highly cited publications, whereas 60 out of 169 publications received no citations. Conclusion In the literature on BPA, citation is mostly driven by positive study outcome and author-related factors, such as high authority within the network. Interpreting the impact of these factors and the big influence of a few highly cited publications, it can be questioned to which extent the knowledge development in human literature on BPA is actually evidence-based.
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spelling doaj.art-79a6f4b384ee469a99eadc89bc67e0b52022-12-22T03:51:42ZengBMCResearch Integrity and Peer Review2058-86152019-03-014111110.1186/s41073-019-0065-7Selective citation in scientific literature on the human health effects of bisphenol AM. J. E. Urlings0B. Duyx1G. M. H. Swaen2L. M. Bouter3M. P. Zeegers4NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht UniversityNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht UniversityNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht UniversityDepartment of Epidemiology and Biostatistics, VU University Medical CenterNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht UniversityAbstract Introduction Bisphenol A is highly debated and studied in relation to a variety of health outcomes. This large variation in the literature makes BPA a topic that is prone to selective use of literature, in order to underpin one’s own findings and opinion. Over time, selective use of literature, by means of citations, can lead to a skewed knowledge development and a biased scientific consensus. In this study, we assess which factors drive citation and whether this results in the overrepresentation of harmful health effects of BPA. Methods A citation network analysis was performed to test various determinants of citation. A systematic search identified all relevant publications on the human health effect of BPA. Data were extracted on potential determinants of selective citation, such as study outcome, study design, sample size, journal impact factor, authority of the author, self-citation, and funding source. We applied random effect logistic regression to assess whether these determinants influence the likelihood of citation. Results One hundred sixty-nine publications on BPA were identified, with 12,432 potential citation pathways of which 808 citations occurred. The network consisted of 63 cross-sectional studies, 34 cohort studies, 29 case-control studies, 35 narrative reviews, and 8 systematic reviews. Positive studies have a 1.5 times greater chance of being cited compared to negative studies. Additionally, the authority of the author and self-citation are consistently found to be positively associated with the likelihood of being cited. Overall, the network seems to be highly influenced by two highly cited publications, whereas 60 out of 169 publications received no citations. Conclusion In the literature on BPA, citation is mostly driven by positive study outcome and author-related factors, such as high authority within the network. Interpreting the impact of these factors and the big influence of a few highly cited publications, it can be questioned to which extent the knowledge development in human literature on BPA is actually evidence-based.http://link.springer.com/article/10.1186/s41073-019-0065-7Questionable research practiceSelective citationCitation analysisMethodologyBisphenol A
spellingShingle M. J. E. Urlings
B. Duyx
G. M. H. Swaen
L. M. Bouter
M. P. Zeegers
Selective citation in scientific literature on the human health effects of bisphenol A
Research Integrity and Peer Review
Questionable research practice
Selective citation
Citation analysis
Methodology
Bisphenol A
title Selective citation in scientific literature on the human health effects of bisphenol A
title_full Selective citation in scientific literature on the human health effects of bisphenol A
title_fullStr Selective citation in scientific literature on the human health effects of bisphenol A
title_full_unstemmed Selective citation in scientific literature on the human health effects of bisphenol A
title_short Selective citation in scientific literature on the human health effects of bisphenol A
title_sort selective citation in scientific literature on the human health effects of bisphenol a
topic Questionable research practice
Selective citation
Citation analysis
Methodology
Bisphenol A
url http://link.springer.com/article/10.1186/s41073-019-0065-7
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