Open access publishing, article downloads, and citations: randomised controlled trial.

Open access publishing, article downloads, and citations: randomised controlled trial.
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DOI:
10.1136/bmj.a568
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发表时间:
2008-07-31
影响因子:
105.7
通讯作者:
Connolly, Mathew J. L.
Connolly, Mathew J. L.
中科院分区:
医学1区
文献类型:
--
作者:
Davis, Philip M.;Lewenstein, Bruce V.;Simon, Daniel H.;Booth, James G.;Connolly, Mathew J. L.

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目的 衡量免费获取科学文献对文章下载和引用的影响。设计随机对照试验。设定美国生理学会出版期刊11种。参与者 1619 篇研究文章和评论。主要成果衡量文章读者人数(以全文、PDF 和摘要的下载量衡量)和唯一访问者数量(互联网协议地址)。一年后,科学信息研究所收集了文章的引用情况。干预措施 对在线发表 11 种科学期刊上发表的文章进行随机分配以开放获取(处理)或订阅访问(控制)。结果 在出版后的前六个月内,与订阅访问文章相比,分配给开放获取的文章全文下载量增加了 89%(95% 置信区间为 76% 至 103%),PDF 下载量增加了 42%(32% 至 52%),唯一身份访问者增加了 23%(16% 至 30%),但摘要下载量减少了 24%(−29% 至 -19%)。在出版后的第一年,开放获取文章被引用的可能性并不比订阅获取文章更高。 59% 的开放获取文章(247 篇中的 146 篇)在发表后 9 至 12 个月内被引用,而订阅获取文章的这一比例为 63%(1372 篇中的 859 篇)。文章引用计数的逻辑回归和负二项式回归分析证实开放获取文章没有引用优势。结论 开放获取出版可能比订阅获取出版吸引更多的读者。没有发现证据表明开放获取文章在发表后的第一年具有引用优势。文献中广泛报道的开放获取的引用优势可能是其他原因造成的。
Objective To measure the effect of free access to the scientific literature on article downloads and citations. Design Randomised controlled trial. Setting 11 journals published by the American Physiological Society. Participants 1619 research articles and reviews. Main outcome measures Article readership (measured as downloads of full text, PDFs, and abstracts) and number of unique visitors (internet protocol addresses). Citations to articles were gathered from the Institute for Scientific Information after one year. Interventions Random assignment on online publication of articles published in 11 scientific journals to open access (treatment) or subscription access (control). Results Articles assigned to open access were associated with 89% more full text downloads (95% confidence interval 76% to 103%), 42% more PDF downloads (32% to 52%), and 23% more unique visitors (16% to 30%), but 24% fewer abstract downloads (−29% to −19%) than subscription access articles in the first six months after publication. Open access articles were no more likely to be cited than subscription access articles in the first year after publication. Fifty nine per cent of open access articles (146 of 247) were cited nine to 12 months after publication compared with 63% (859 of 1372) of subscription access articles. Logistic and negative binomial regression analysis of article citation counts confirmed no citation advantage for open access articles. Conclusions Open access publishing may reach more readers than subscription access publishing. No evidence was found of a citation advantage for open access articles in the first year after publication. The citation advantage from open access reported widely in the literature may be an artefact of other causes.
DOI: 10.1007/s11192-007-1661
发表时间: 2007-05-01
期刊: SCIENTOMETRICS
影响因子: 3.9
作者:
Davis, Philip M.;Fromerth, Michael J.
通讯作者: Fromerth, Michael J.
DOI: 10.1136/bmj.329.7465.546
发表时间: 2004-09-04
影响因子: --
作者:
Perneger, TV
通讯作者: Perneger, TV
DOI: 10.1002/asi.20405
发表时间: 2006-07-01
影响因子: --
作者:
Davis, Philip M.;Price, Jason S.
通讯作者: Price, Jason S.
DOI: 10.1002/asi.5090160305
发表时间: 1965-01-01
期刊: AMERICAN DOCUMENTATION
影响因子: --
作者:
KAPLAN, N
通讯作者: KAPLAN, N