Miri Seyyed Mohammad, Raoofi Azam, Heidari Zahra
Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Tehran, IR Iran ; Kowsar, Hoensbroek, The Netherlands.
Hepat Mon. 2012 Sep;12(9):e7441. doi: 10.5812/hepatmon.7441. Epub 2012 Sep 7.
Citation analysis as one of the most widely used methods of bibliometrics can be used for computing the various impact measures for scholars based on data from citation databases. Journal Citation Reports (JCR) from Thomson Reuters provides annual report in the form of impact factor (IF) for each journal.
We aimed to evaluate the citation parameters of Hepatitis Monthly by JCR in 2010 and compare them with GS and Sc.
All articles of Hepat Mon published in 2009 and 2008 which had been cited in 2010 in three databases including WoS, Sc and GS gathered in a spreadsheet. The IFs were manually calculated.
Among the 104 total published articles the accuracy rates of GS and Sc in recording the total number of articles was 96% and 87.5%. There was a difference between IFs among the three databases (0.793 in ISI [Institute for Scientific Information], 0.945 in Sc and 0.85 GS). The missing rate of citations in ISI was 4% totally. Original articles were the main cited types, whereas, guidelines and clinical challenges were the least ones.
None of the three databases succeed to record all articles published in the journal. Despite high sensitivity of GS comparing to Sc, it cannot be a reliable source for indexing since GS has lack of screening in the data collection and low specificity. Using an average of three IFs is suggested to find the correct IF. Editors should be more aware on the role of original articles in increasing IF and the potential efficacy of review articles in long term impact factor.
文献计量学中使用最广泛的方法之一是引文分析，它可用于根据引文数据库中的数据计算学者的各种影响力指标。汤森路透的《期刊引证报告》（JCR）以影响因子（IF）的形式为每种期刊提供年度报告。
我们旨在评估《肝炎月刊》2010年的JCR引文参数，并将其与谷歌学术（GS）和Scopus（Sc）进行比较。
将2009年和2008年发表在《肝炎月刊》上且在2010年被Web of Science（WoS）、Scopus和谷歌学术这三个数据库引用的所有文章收集到一个电子表格中。人工计算影响因子。
在总共发表的104篇文章中，谷歌学术和Scopus记录文章总数的准确率分别为96%和87.5%。三个数据库的影响因子存在差异（科学信息研究所（ISI）为0.793，Scopus为0.945，谷歌学术为0.85）。ISI中引文的缺失率总计为4%。原创文章是主要的被引类型，而指南和临床挑战类文章被引最少。
这三个数据库均未能成功记录该期刊发表的所有文章。尽管谷歌学术比Scopus具有更高的敏感性，但由于其在数据收集过程中缺乏筛选且特异性较低，因此不能作为一个可靠的索引来源。建议使用三个影响因子的平均值来确定正确的影响因子。编辑应更加重视原创文章对提高影响因子的作用以及综述文章对长期影响因子的潜在效力。
