Information Services, York Health Economics Consortium, York, UK.
Int J Technol Assess Health Care. 2009 Oct;25(4):522-9. doi: 10.1017/S0266462309990523.
Health technology assessment (HTA) agencies assessing the cost-effectiveness of healthcare technologies seek evidence from economic evaluations. As well as searching economic evaluation databases, researchers often search MEDLINE and EMBASE, using search filters whose current performance is unclear. We assessed the performance of search filters in identifying economic evaluations from MEDLINE and EMBASE.
A gold standard of economic evaluations was compiled from National Health Service Economic Evaluation Database (NHS EED) records for 2000, 2003, and 2006. Corresponding records were retrieved in MEDLINE and EMBASE. Search filters were identified from the InterTASC Information Specialists' SubGroup Web site and from Canadian Agency for Drugs and Technologies in Health (CADTH) Information Services. The sensitivity and precision of search filters in retrieving gold standard records from MEDLINE and EMBASE were tested.
A total of 2,070 full economic evaluations were identified from NHS EED. Of these, 1,955 records were available in Ovid MEDLINE and 1,873 were available in Ovid EMBASE. Thirteen MEDLINE and eight EMBASE filters were identified. NHS Quality Improvement Scotland (full and brief filters), the NHS EED and Royle and Waugh filters achieved over 0.99 sensitivity in MEDLINE. NHS Quality Improvement Scotland, CADTH, Royle and Waugh, and NHS EED filters achieved greater than 0.99 sensitivity in EMBASE. Filters demonstrated low precision.
This research provided new performance data on search filters to identify economic evaluations in MEDLINE and EMBASE. It demonstrated that highly sensitive economic evaluation filters are available, but that precision is low, yielding perhaps 5 relevant records per 100 records scanned.
评估卫生技术成本效益的健康技术评估（HTA）机构从经济评估中寻求证据。研究人员除了搜索经济评估数据库外，还经常使用搜索过滤器搜索 MEDLINE 和 EMBASE，但其当前性能尚不清楚。我们评估了搜索过滤器在从 MEDLINE 和 EMBASE 中识别经济评估的性能。
从国家卫生服务经济评估数据库（NHS EED）中为 2000 年、2003 年和 2006 年编制了经济评估的黄金标准。在 MEDLINE 和 EMBASE 中检索到相应的记录。从 InterTASC 信息专家小组网站和加拿大药物和技术评估机构（CADTH）信息服务中确定了搜索过滤器。测试了从 MEDLINE 和 EMBASE 检索黄金标准记录的搜索过滤器的灵敏度和精度。
从 NHS EED 中总共确定了 2070 项完整的经济评估。其中，1955 条记录可在 Ovid MEDLINE 中获得，1873 条记录可在 Ovid EMBASE 中获得。确定了 13 种 MEDLINE 和 8 种 EMBASE 过滤器。NHS 质量改进苏格兰（完整和简要过滤器）、NHS EED 和罗伊尔和沃augh 过滤器在 MEDLINE 中的灵敏度均超过 0.99。NHS 质量改进苏格兰、CADTH、罗伊尔和沃augh 和 NHS EED 过滤器在 EMBASE 中的灵敏度均大于 0.99。过滤器的精度较低。
这项研究提供了关于在 MEDLINE 和 EMBASE 中识别经济评估的搜索过滤器的新性能数据。它表明，存在高度敏感的经济评估过滤器，但精度较低，每 100 条扫描记录中可能有 5 条相关记录。
