UK Cochrane Centre, National Institute for Health Research, Summertown Pavilion, 18-24 Middle Way, Oxford OX2 7LG, UK.
J Clin Epidemiol. 2012 May;65(5):493-6. doi: 10.1016/j.jclinepi.2011.09.009. Epub 2012 Jan 2.
To determine the extent to which abstracts of methodology research, initially presented at annual meetings of The Cochrane Collaboration, have been published as full reports and over what period of time. A secondary aim was to explore whether full publication varied in different methodological subject areas.
The Cochrane Methodology Register (CMR) was searched for all abstracts reporting methodology research, presented at the 11 Cochrane Colloquia from 1997 to 2007. EMBASE, PubMed, and CMR were searched for full publications of the same research.
We identified 908 eligible conference abstracts and found full publications for 312 (34.4%) of these, almost half of which (47.1%) had appeared by the end of the first year after the relevant Colloquium. The proportion of abstracts that had not been published by 3 years was 69.7%, falling to 66.2% at 5 years. Publication varied considerably between different methodological areas.
Approximately two-thirds of methodological research studies presented at Cochrane Colloquia remain unpublished as full papers at least 5 years later. This highlights the importance of searching conference abstracts if one wishes to find as comprehensive and complete a sample of methodological research as possible.
确定在多大程度上，最初在 Cochrane 协作组织年会上提交的方法学研究摘要已作为完整报告发表，以及在多长时间内发表。次要目的是探讨完整发表的情况是否因不同的方法学主题领域而异。
在 1997 年至 2007 年的 11 次 Cochrane 研讨会上，从 Cochrane 方法学注册库（CMR）中搜索所有报告方法学研究的摘要。在 EMBASE、PubMed 和 CMR 中搜索相同研究的完整出版物。
我们确定了 908 篇合格的会议摘要，并找到了其中 312 篇（34.4%）的完整出版物，其中近一半（47.1%）在相关研讨会结束后的第一年就发表了。3 年内未发表的摘要比例为 69.7%，5 年内降至 66.2%。不同方法学领域的发表情况差异很大。
在 Cochrane 研讨会上提交的方法学研究约有三分之二在至少 5 年后仍未作为完整论文发表。这强调了如果希望尽可能全面和完整地找到方法学研究的样本，那么搜索会议摘要的重要性。
