Department of Trauma and Orthopaedics, St Helier Hospital, Carshalton, UK.
Department of Trauma and Orthopaedics, Broomfield Hospital, Chelmsford, UK.
ANZ J Surg. 2021 May;91(5):975-979. doi: 10.1111/ans.16546. Epub 2021 Feb 8.
Impact factor (IF) is widely accepted as a measure of a journal's quality but it can be influenced by self-citation. However, the SCImago Journal Rank (SJR) is based on journal prestige, excludes self-citation and considers quality of citations of a journal. This study aimed to investigate journal editors' use of self-citation and whether this correlated with IFs or SJR in trauma and orthopaedic (T&O) journals.
T&O journals on the SJR database were identified. From each journal, data including country of publication, number of annual issues, IF, SJR indicator and citable articles were extracted. The editorial(s) of each issue in 2018 were reviewed. The total number of times the editors cited their own previous work or their journal (in the preceding 2 years, 2016-2017) were identified. Regression analyses were performed to investigate the association of editorial self-citation with journal IF or SJR indicator.
Of the 270 journals identified, 43 T&O journals with 151 editorials were included in the final analysis. A positive correlation between journal self-citation in the editorial and IF (P = 0.02) and SJR indicator (P = 0.02) was found. Citation by editors of their own publications within editorials also positively correlated with IF (P = 0.04) but not for SJR indicator (P = 0.19). There was a positive linear relationship between journal IF and SJR indicators (P < 0.01).
Editor self-citation influences the IF and SJR indicators in T&O journals. Therefore, these metrics should be considered in conjunction with other factors such as audience, topics included and international presence when evaluating journals.
影响因子（IF）被广泛认为是衡量期刊质量的指标，但它可能受到自引的影响。然而，Scimago 期刊排名（SJR）基于期刊声望，排除自引，并考虑期刊引文的质量。本研究旨在调查创伤和骨科（T&O）期刊编辑的自引情况，以及这种自引是否与 IF 或 SJR 相关。
确定 SJR 数据库中的 T&O 期刊。从每个期刊中提取数据，包括出版国家、年刊数量、IF、SJR 指标和可引用文章。审查 2018 年每个问题的编辑。确定编辑在前两年（2016-2017 年）引用自己以前的工作或自己的期刊的总次数。进行回归分析，以调查编辑自引与期刊 IF 或 SJR 指标的关系。
在确定的 270 种期刊中，有 43 种 T&O 期刊的 151 篇社论被纳入最终分析。发现期刊社论中的自引与 IF（P=0.02）和 SJR 指标（P=0.02）呈正相关。编辑在社论中引用自己的出版物也与 IF 呈正相关（P=0.04），但与 SJR 指标无关（P=0.19）。期刊 IF 和 SJR 指标之间存在正线性关系（P<0.01）。
编辑自引影响 T&O 期刊的 IF 和 SJR 指标。因此，在评估期刊时，应将这些指标与受众、包含的主题和国际影响力等其他因素结合考虑。
