Applying systematic review search methods to the grey literature: a case study examining guidelines for school-based breakfast programs in Canada.
Applying systematic review search methods to the grey literature: a case study examining guidelines for school-based breakfast programs in Canada.
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DOI：
10.1186/s13643-015-0125-0
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发表时间：
2015-10-22
影响因子：
3.7
通讯作者：
Leatherdale ST
中科院分区：
文献类型：
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作者：
Godin K;Stapleton J;Kirkpatrick SI;Hanning RM;Leatherdale ST
灰色文献是大规模综述综合的重要信息来源。然而，灰色文献有许多特点，使其难以系统地检索。此外，严格的系统性灰色文献检索方法没有“黄金标准”，关于如何进行这种类型的检索的资源也很少。本文介绍了系统评价的搜索方法，开发和应用，以完成一个案例研究系统评价灰色文献，在加拿大以学校为基础的早餐计划的指导方针。制定了灰色文献检索计划，以纳入四种不同的检索策略：（1）灰色文献数据库，（2）定制的Google搜索引擎，（3）目标网站，以及（4）咨询联系专家。采用这些补充性策略是为了尽量减少遗漏相关来源的风险。由于灰色文献文件中通常无法获得摘要，因此筛选了项目摘要、执行摘要或目录（无论可用）。随后对出版物全文进行了筛选。数据提取的组织，出版年份，他们是谁开发的，预期的观众，目标/目标的文件，引用的证据/资源的来源，膳食中提到的指导方针，并建议方案交付。发现用于识别和筛选纳入病例研究综述的出版物的检索策略在实践中应用时是可管理的、全面的和直观的。灰色文献检索计划的四种检索策略产生了302个潜在相关项目进行筛选。筛选过程后，保留了15篇符合所有合格标准的出版物，并将其纳入病例研究系统综述。简要描述了案例研究系统评价的高水平结果。本文提出了一种应用系统检索策略在灰色文献中识别网络资源的可行性方法。我们开发和测试的搜索策略适合于适应，以确定其他类型的灰色文献从其他学科和回答广泛的研究问题。这种方法应在今后的研究综合中进一步调整和测试。本文的在线版本（doi：10.1186/s13643-015-0125-0）包含补充材料，可供授权用户使用。
Grey literature is an important source of information for large-scale review syntheses. However, there are many characteristics of grey literature that make it difficult to search systematically. Further, there is no ‘gold standard’ for rigorous systematic grey literature search methods and few resources on how to conduct this type of search. This paper describes systematic review search methods that were developed and applied to complete a case study systematic review of grey literature that examined guidelines for school-based breakfast programs in Canada. A grey literature search plan was developed to incorporate four different searching strategies: (1) grey literature databases, (2) customized Google search engines, (3) targeted websites, and (4) consultation with contact experts. These complementary strategies were used to minimize the risk of omitting relevant sources. Since abstracts are often unavailable in grey literature documents, items’ abstracts, executive summaries, or table of contents (whichever was available) were screened. Screening of publications’ full-text followed. Data were extracted on the organization, year published, who they were developed by, intended audience, goal/objectives of document, sources of evidence/resources cited, meals mentioned in the guidelines, and recommendations for program delivery. The search strategies for identifying and screening publications for inclusion in the case study review was found to be manageable, comprehensive, and intuitive when applied in practice. The four search strategies of the grey literature search plan yielded 302 potentially relevant items for screening. Following the screening process, 15 publications that met all eligibility criteria remained and were included in the case study systematic review. The high-level findings of the case study systematic review are briefly described. This article demonstrated a feasible and seemingly robust method for applying systematic search strategies to identify web-based resources in the grey literature. The search strategy we developed and tested is amenable to adaptation to identify other types of grey literature from other disciplines and answering a wide range of research questions. This method should be further adapted and tested in future research syntheses. The online version of this article (doi:10.1186/s13643-015-0125-0) contains supplementary material, which is available to authorized users.