York Health Economics Consortium, York, UK.
Vet Diagnostic and Production Animal Med, Iowa State University, Ames, IA, USA.
Res Synth Methods. 2018 Dec;9(4):527-539. doi: 10.1002/jrsm.1289. Epub 2018 Feb 7.
Systematic review methods are now being used for reviews of food production, food safety and security, plant health, and animal health and welfare. Information retrieval methods in this context have been informed by human health-care approaches and ideally should be based on relevant research and experience.
This narrative review seeks to identify and summarize current research-based evidence and experience on information retrieval for systematic reviews in food and feed topics.
MEDLINE (Ovid), Science Citation Index (Web of Science), and ScienceDirect (http://www.sciencedirect.com/) were searched in 2012 and 2016. We also contacted topic experts and undertook citation searches. We selected and summarized studies reporting research on information retrieval, as well as published guidance and experience.
There is little published evidence on the most efficient way to conduct searches for food and feed topics. There are few available study design search filters, and their use may be problematic given poor or inconsistent reporting of study methods. Food and feed research makes use of a wide range of study designs so it might be best to focus strategy development on capturing study populations, although this also has challenges. There is limited guidance on which resources should be searched and whether publication bias in disciplines relevant to food and feed necessitates extensive searching of the gray literature.
There is some limited evidence on information retrieval approaches, but more research is required to inform effective and efficient approaches to searching to populate food and feed reviews.
系统评价方法现被用于食品生产、食品安全与保障、植物健康、动物健康与福利的评价。这方面的信息检索方法借鉴了人类医疗保健方法，理想情况下应基于相关研究和经验。
本叙述性综述旨在确定并总结目前关于食品和饲料主题系统评价信息检索的基于研究的证据和经验。
2012 年和 2016 年在 MEDLINE（Ovid）、科学引文索引（Web of Science）和 ScienceDirect（http://www.sciencedirect.com/）上进行了检索。我们还联系了专题专家并进行了引文检索。我们选择并总结了报告信息检索研究的研究报告，以及已发表的指南和经验。
关于食品和饲料主题最有效的搜索方法，发表的证据很少。现有的研究设计搜索过滤器数量有限，由于研究方法报告不佳或不一致，其使用可能存在问题。食品和饲料研究采用了广泛的研究设计，因此最好将策略开发重点放在捕获研究人群上，尽管这也存在挑战。关于应搜索哪些资源以及与食品和饲料相关的学科是否存在出版偏倚，是否需要广泛搜索灰色文献，指南有限。
关于信息检索方法有一些有限的证据，但需要更多的研究来为搜索提供有效和高效的方法，以充实食品和饲料评价。
