避孕药具证据检索的方法与策略.pdf

实  践  与  交  流 中国循证医学杂志2009, 9(11): 1241 ～1246 避孕药具证据检索的方法与策略 1 1 1 1 1,* 2,* 李  玲  高  霑  文  进  艾昌林  李幼平   李  瑛 1. 四川大学华西医院中国循证医学中心（成都 610041 ）；2. 江苏省计划生育科学技术研究所（南京 210036 ） 摘要 本文从循证医学应用证据和创造证据两个方面介绍了避孕药具证据的检索方法与策略，指出应根据检 索目的做出选择：若为应用证据，应根据证据级别的高低依次选择不同的数据库，用准确的检索词快速检索相关文 献；若为创造证据，则应尽可能选择多个相关数据库，并采用不同的检索词全面检索相关文献。可根据检索目的及 检出文献数量把握所选检索词的敏感度与特异度。 关键词 避孕药具；检索方法；检索策略；主题词检索；自由词检索 Search Methods and Strategies of Contraceptive Evidence 1 1 1 1 1,* 2,* LI Ling , GAO Zhan , WEN Jin , AI Chang-lin , LI You-ping , LI Ying 1. Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, China; 2. Jiangsu Institute of Planned Parenthood Research, Nanjing 210036, China Abstract In this paper, we introduce search strategies and methods of contraceptive evidence through two aspects of evidence-based medicine, namely, the application of evidence and the creation of evidence. We should make choices according to our objectives when we search clinical evidence. If we aim to apply evidence, we should sequentially choose different databases according to the quality of evidence and use accurate search terms to search relevant papers quickly; if we aim to create evidence, we should choose multiple related databases and use different search terms to retrieve relevant studies comprehensively. The sensitivity and specificity of the selected search terms can be identified according to our purposes and the number of the retrieved papers. Key words Contraceptive; Search method; Search strategy; Subject search; Free text search [6,7] 避孕药具是指育龄人群为避免怀孕而采用的药物和器 使用其他方法 。2003 年我国有13 090 万人使用避孕药具， 具。我国目前应用较广泛的避孕药具有避孕药、避