Remarkable Growth of Open Access in the Biomedical Field: Analysis of PubMed Articles from 2006 to 2010
Remarkable Growth of Open Access in the Biomedical Field: Analysis of PubMed Articles from 2006 to 2010
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DOI：
10.1371/journal.pone.0060925
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发表时间：
2013-05-01
期刊：
影响因子：
3.7
通讯作者：
Matsubayashi, Mamiko
中科院分区：
文献类型：
--
作者：
Kurata, Keiko;Morioka, Tomoko;Matsubayashi, Mamiko
简介：本研究阐明了2006年和2010年之间在生物医学领域的开放获取（OA）观察到的趋势，并探讨了可能的解释OA率的差异，在最近的surveillance.Methods：这项研究包括一个主要的调查和两个补充调查。在主要调查中，进行了手动Google搜索，以调查PubMed文章的全文版本是否可以免费获得。目标样本为2005年、2007年和2009年发表的文章;分别在2006年、2008年和2010年发表后一年进行检索。利用搜索结果，我们将OA提供方法分为七类。补充调查使用PubMed上的两个搜索功能计算OA率：“LinkOut”和“Limits”。''结果：主要调查的结论是，2006年至2010年，骨关节炎发病率大幅上升：2010年骨关节炎发病率（50.2%）是2006年（26.3%）的两倍。此外，大多数OA文章可从OA期刊（OAJ）网站获得，表明OAJ在整个期间一直是OA的重要贡献者。通过PubMed Central（PMC）存储库的OA可用性也显著增加。从两个补充调查中获得的OA率低于主要调查中发现的。“LinkOut”在主调查中仅能找到40%的OA文章。讨论：生物医学领域的OA文章占50%以上。OA是通过OAJs实现的。我们的调查中的OA比率与最近的调查中的OA比率不同的原因似乎是抽样方法和验证程序的不同。
Introduction: This study clarifies the trends observed in open access (OA) in the biomedical field between 2006 and 2010, and explores the possible explanations for the differences in OA rates revealed in recent surveys.Methods: The study consists of a main survey and two supplementary surveys. In the main survey, a manual Google search was performed to investigate whether full-text versions of articles from PubMed were freely available. Target samples were articles published in 2005, 2007, and 2009; the searches were performed a year after publication in 2006, 2008, and 2010, respectively. Using the search results, we classified the OA provision methods into seven categories. The supplementary surveys calculated the OA rate using two search functions on PubMed: "LinkOut'' and "Limits.''Results: The main survey concluded that the OA rate increased significantly between 2006 and 2010: the OA rate in 2010 (50.2%) was twice that in 2006 (26.3%). Furthermore, majority of OA articles were available from OA journal (OAJ) websites, indicating that OAJs have consistently been a significant contributor to OA throughout the period. OA availability through the PubMed Central (PMC) repository also increased significantly. OA rates obtained from two supplementary surveys were lower than those found in the main survey. "LinkOut'' could find only 40% of OA articles in the main survey.Discussion: OA articles in the biomedical field have more than a 50% share. OA has been achieved through OAJs. The reason why the OA rates in our surveys are different from those in recent surveys seems to be the difference in sampling methods and verification procedures.