Department of Radiology, McMaster University, Hamilton, Ontario, Canada.
Department of Radiology, McMaster University, Hamilton General Hospital, Hamilton, Ontario, Canada.
Can Assoc Radiol J. 2019 Nov;70(4):383-387. doi: 10.1016/j.carj.2019.06.004. Epub 2019 Aug 29.
This study is aimed to identify predictors of citation rate of original research published in the Canadian Association of Radiologists Journal (CARJ).
A search of MEDLINE was conducted from January 1, 2000-June 30, 2013 to identify all studies published in the CARJ. Original research studies were included. Reviews, pictorial essays, guidelines, case studies, case series, and original studies with a sample size <10 were excluded. Variables assessed for association with citation rate included number of authors, study design, sample size, multi-institutional study, multi-national study, study type, presence of statistically significant result, presence of funding, and number of references. Statistical analysis was completed using linear regression and Pearson correlation coefficients (r).
A total of 714 studies were published in CARJ, of which 181 were original research publications that were cited a total of 1517 times. Twelve original research studies were uncited, while the most-cited one was cited 58 times. Sample size (r = 0.177, P = .017) and number of references (r = 0.164, P = .028) demonstrated statistically significant weak positive correlations with citation rate. Number of authors, study design, setting, statistically significant results, and funding were not associated with citation rate.
Only a very small number of original research studies published at the CARJ remained uncited 5 or more years after the publication. Sample size and number of references were identified as significant, but weak predictors of citation rate in CARJ.
本研究旨在确定加拿大放射学会杂志（CARJ）发表的原始研究论文被引率的预测因素。
对 MEDLINE 进行了检索，检索范围为 2000 年 1 月 1 日至 2013 年 6 月 30 日，以确定发表在 CARJ 上的所有研究。纳入了原始研究论文。排除了综述、图片论文、指南、病例报告、病例系列以及样本量<10 的原始研究。评估与被引率相关的变量包括作者数量、研究设计、样本量、多机构研究、多国研究、研究类型、是否存在统计学显著结果、是否存在资金支持以及参考文献数量。使用线性回归和 Pearson 相关系数（r）进行统计分析。
共发表了 714 篇 CARJ 文章，其中 181 篇为原始研究出版物，共被引用了 1517 次。有 12 篇原始研究未被引用，而被引用次数最多的一篇被引用了 58 次。样本量（r=0.177，P=0.017）和参考文献数量（r=0.164，P=0.028）与被引率呈显著的弱正相关。作者数量、研究设计、研究地点、统计学显著结果和资金支持与被引率无关。
在 CARJ 发表的原始研究论文中，只有极少数在发表后 5 年或更长时间未被引用。样本量和参考文献数量是 CARJ 被引率的重要但较弱的预测因素。
