University of California Los Angeles, USA.
Ann Emerg Med. 2011 Feb;57(2):153-160.e3. doi: 10.1016/j.annemergmed.2010.10.008. Epub 2010 Dec 22.
To determine how a sample of medical journals use the Internet to provide additional content and features to readers and how this has changed since 2003.
In 2005, we surveyed 2003 and 2005 issues of 138 high-impact print medical journals to determine to what extent they were using the Internet to provide online-only articles and supplementary content to print articles (sampled 28 journals), and electronic space for the postpublication critique of their articles (sampled all 138 journals). We used the same methodology to determine what kinds of Web-only supplementary material were provided with each print article in March 2007 and 2009 issues of the same 28 journals used for the 2003 to 2005 study. As before, we also determined which of the 138 journals offered rapid response pages and how those pages were being used.
The proportion of the 28 journals providing Web-only supplementary material increased from 32% (2003) to 50% (2005) to 61% (2007) to 64% (2009), and the percentage of articles that contained supplementary material increased from 7% to 14% to 20% to 25%, respectively. We observed a marked increase in the number of video supplements. In contrast, journals offering online postpublication review decreased from 17 of 138 (12%) to 12 of 138 (9%) to 11 of 138 (8%) from 2005 to 2007 to 2009, and the percentage of articles with no responses was unchanged at 82%.
The use of online-only articles and online-only supplements by print journals continues to increase. Postpublication critique of articles in online pages provided by the journal does not seem to be taking hold.
确定样本医学期刊如何利用互联网向读者提供额外的内容和功能，以及自 2003 年以来这种情况发生了哪些变化。
2005 年，我们调查了 138 种高影响力印刷医学期刊的 2003 年和 2005 年的期刊，以确定它们在何种程度上利用互联网提供在线文章和印刷文章的补充内容（抽样 28 种期刊），以及为其文章提供在线发表后评论的电子空间（对所有 138 种期刊进行抽样）。我们使用相同的方法来确定 2003 年至 2005 年研究中使用的 28 种期刊的 2007 年和 2009 年的同一期期刊的每篇印刷文章提供了哪些类型的网络补充材料。与以往一样，我们还确定了 138 种期刊中有多少种提供快速响应页面，以及这些页面的使用情况。
提供网络补充材料的 28 种期刊的比例从 2003 年的 32%增加到 2005 年的 50%、2007 年的 61%和 2009 年的 64%，包含补充材料的文章比例从 7%增加到 14%、20%和 25%。我们观察到视频补充的数量显著增加。相比之下，提供在线发表后评论的期刊数量从 138 种中的 17 种（12%）减少到 2005 年至 2007 年至 2009 年的 12 种（9%）、11 种（8%）和 11 种（8%），没有回复的文章比例保持在 82%不变。
印刷期刊对在线文章和在线补充材料的使用继续增加。期刊在线页面提供的文章在线发表后评论似乎并未得到普及。
