Dental Clinics Zwolle, Zwolle, The Netherlands.
Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Prog Orthod. 2021 Jan 7;22(1):1. doi: 10.1186/s40510-020-00348-y.
The aims of this bibliometric study were to determine author self-citation trends in high-impact orthodontic literature and to investigate possible association between self-citation and publication characteristics.
Six orthodontic journals with the highest impact factor as ranked by 2017 Journal Citation Reports were screened for a full publication year (2018) for original research articles, reviews, and case reports. Eligible articles were scrutinized for article and author characteristics and citation metrics. Univariable and multivariable negative binomial regression was used to examine associations between self-citation incidence and publication characteristics.
Medians for author self-citation rate of the most self-citing authors and self-citations were 3.03% (range 0-50) and 1 (range 0-19), respectively. In the univariable analysis, there was no association between self-citation counts and study type (P = 0.41), article topic (P = 0.61), number of authors (P = 0.62), and rank of authors (P = 0.56). Author origin (P = 0.001), gender (P = 0.001) and journal (P = 0.05) were associated with self-citation counts and in the multivariable analysis only origin and gender remained strong self-citation predictors. Asian authors and females self-cited significantly less often than all other regions and male authors.
Authors in orthodontics do not self-cite at a frequency that suggests potential citation manipulation. Author origin and gender were the only variables associated with citations counts. More bibliometric research is necessary to draw solid conclusions about author self-citation trends in orthodontic literature.
本计量研究旨在确定高影响力正畸文献中作者自引趋势，并探讨自引与出版特征之间可能存在的关联。
筛选了 2017 年期刊引文报告排名最高的六本正畸期刊，以获取完整的出版年（2018 年）的原始研究文章、综述和病例报告。对符合条件的文章进行了文章和作者特征以及引文指标的详细审查。采用单变量和多变量负二项回归分析，以检验自引发生率与出版特征之间的关联。
最常自引作者和自引的作者自引率中位数分别为 3.03%（范围 0-50）和 1（范围 0-19）。在单变量分析中，自引计数与研究类型（P=0.41）、文章主题（P=0.61）、作者数量（P=0.62）和作者排名（P=0.56）之间无关联。作者来源（P=0.001）、性别（P=0.001）和期刊（P=0.05）与自引计数相关，在多变量分析中，只有来源和性别仍然是自引的强烈预测因素。亚洲作者和女性自引的频率明显低于其他所有地区和男性作者。
正畸学作者自引的频率并未暗示潜在的引文操纵。作者来源和性别是与引文计数唯一相关的变量。需要更多的文献计量学研究才能对正畸文献中作者自引趋势得出可靠的结论。
