中医药学循证医学文献阅读学习课件.ppt

Structure of Cochrane Reveiw Introduction 引言 Background Objective Search strategy 检索策略 Selection criteria 选择标准 Data collection and analysis 数据收集与分析 Main results 主要结果 Review’s conclusion 综述者结论 掌握 * 引言 (修订,截至,被动) A substantive amendment to this systematic review was last made on 26 August 2002. 此系统综述的实质性修改截止2002年8月26日。 * Background origin 起源 current status 现况 mechanism 机制 掌握 * Background – origin Extracts of the leaves of the maidenhair tree, Ginkgo biloba, have long been used in China as a traditional medicine for various disorders of health. 在中国，从掌叶铁钱蕨白果树叶精华作为传统药物，长期用于治疗各种疾病。 掌握 * Background – status② A standardized extract is widely prescribed in Germany and France for the treatment of a range of conditions including memory and concentration problems, confusion, depression, anxiety, dizziness, tinnitus and headache. 掌握 * 背景 – 现况② 一种广泛用于德国与法国的标准萃取物可治疗多种疾病，包括记忆与思想集中病症、意识模糊、抑郁、焦虑、头晕、耳鸣与头痛。 掌握 * Background- mechanism③ The mechanisms of action are thought to reflect the action of several components of the extract and include increasing blood supply by dilating blood vessels, reducing blood viscosity, modification of neurotransmitter systems, and reducing the density of oxygen free radicals. 掌握 * 背景 – 机制③ 有人认为，若干成分的作用机制是扩张血管、降低血液粘滞度、改善神经递质系统，以及减少氧游离基密度而增加血供 掌握 * 3.Objective - explicit 鲜明 The aim of the review is to assess the efficacy and safety of Ginkgo biloba for the treatment of patients with dementia or cognitive decline. 本综述目标是评估白果治疗痴呆症或认知功能减退的有效性与安全性。 掌握 * Search strategy – 3T Time Types Terms * Strategy – Time Types Trial were identified on 26 June 2002 through a search of the CDCIG…… * synonym 同义词 asterisk * 　 The search terms used were ginkgo*, tanakan, EGB-761, EGB761 and EGB 761. 所用检索术语为 ginkgo*、 tanakan、 EGB-761、 EGB761与 “EGB 761”。 * Selection criteria - phrase+ clause All relevant, unconfounded, randomized, double-blind controlled studies, in which extracts of Ginkgo biloba at any strength and over any period were compared with plac