Clinical Search Retrieval from Four Electronic Databases

说明： 这项提案中的项目是一系列研究的一部分，这些研究寻求开发和利用搜索策略(“对冲”)的方法，这些策略将改善从MEDLINE等大型、通用、生物医学研究书目数据库中检索临床相关和科学合理的报告。搜索策略的目的是1)帮助医疗保健提供者进行他们自己的搜索；2)帮助已发表的关于管理医疗保健问题的证据的审查者检索所有相关的引文；3)为图书馆员提供资源，帮助临床医生建立他们自己的搜索；以及4)向书目数据库制作者提供关于索引过程和数据库组织的输入。我们的长期目标是利用电子书目数据库中与临床最相关的内容，以便它们对临床实践的影响能够得到加强。我们认为，鉴于大型数据库中索引和检索的固有问题，以及临床医生、研究人员、教育工作者、管理人员、律师、记者、患者和公众对这些数据库的广泛和迅速的直接使用，迫切需要改进搜索策略，他们的兴趣主要针对与卫生保健问题的原因、过程、诊断、成本、预防和治疗最相关的一小部分文献。这项提案中要解决的问题涉及：定义期刊子集，在MEDLINE中搜索时可能导致更高的精确度；调查MEDLINE索引的准确性和一致性；确定在发表结构化摘要的期刊子集中搜索时是否增强了检索；评估自STARD倡议以来诊断准确性研究报告的完整性，并确定这是否对索引有影响；确定当使用优化不同搜索特征(例如，敏感性)的搜索过滤器时对诊断综述的影响；以及评估临床对冲在预期用户群体(临床医生)中的有用性。

DESCRIPTION: The projects in this proposal are part of a series of studies seeking ways to develop and harness search strategies ("hedges") that will improve retrieval of clinically relevant and scientifically sound reports from large, general purpose, biomedical research bibliographic databases such as MEDLINE. The purpose of the search strategies is 1) to assist health care providers to do their own searches; 2) to help reviewers of published evidence about managing health care problems to retrieve all relevant citations; 3) to provide resources for librarians to help clinicians construct their own searches; and 4) to provide input to bibliographic database producers about indexing processes and organization of databases. Our long-term objective is to harness the most clinically relevant content of electronic bibliographic databases so that their influence on clinical practice can be enhanced. We believe that improved search strategies are urgently needed given the inherent problems of indexing and retrieval in large databases, and the widespread and rapidly increasing direct use of these databases by clinicians, researchers, educators, administrators, lawyers, journalists, patients, and the general public, whose interests are primarily directed towards a small subset of the literature that is of most relevance to the cause, course, diagnosis, costs, prevention, and treatment of health care problems. The questions to be addressed in this proposal are related to defining journal subsets which may lead to better precision when searching in MEDLINE; investigating the accuracy and consistency of MEDLINE indexing; determining if retrieval is enhanced when searching in journal subsets that publish structured abstracts; assessing the completeness of reporting of studies of diagnostic accuracy since the STARD initiative and determining if this has had an impact on indexing; determining the impact on diagnostic reviews when using search filters that optimize different searching characteristics (e.g., sensitivity); and evaluating the usefulness of the clinical hedges in the intended users group, clinicians.