Zaidi Zareen, Hashim Jawad, Iqbal Mobeen, Quadri K Mujtaba
Shifa College of Medicine, Islamabad, Pakistan.
J Pak Med Assoc. 2007 Nov;57(11):556-60.
Evidence-based Medicine (EBM) is the process of systematically reviewing, appraising and using clinical research findings to aid the delivery of optimal clinical care to patients. EBM has become popular due to: the need for valid information about diagnosis, prognosis, therapy and prevention during patient care; traditional sources such as textbooks and expert opinion being frequently out-of-date; and knowledge of current best evidence declining with time from graduation from medical college. EBM has become feasible for practicing clinicians due to: new strategies for appraising studies; availability of systematic reviews (summaries) of current best evidence; and information technology (computers with Internet access). In a resource-limited country such as Pakistan, an evidence-based approach can be cost-effective by reducing clinical practices that have no proven benefit. Commonly perceived obstacles to EBM include limited access to computers, the Internet and online resources. Reliable resources of EBM are available (such as The Cochrane Database of Systematic Reviews http://www.cochrane.org) although many of these require paid subscriptions. Another difficulty is the issue of applicability of data from other countries to patients in our setting with different socio-economic factors. Other barriers to EBM in developing countries include: inexperience in small-group learning, limited time to attend workshops, and the lack of role models for practicing EBM. We have also tried to address the common fallacies related to EBM in the hope of greater use of these skills by busy clinicians as well as academic researchers.
循证医学(EBM)是一个系统地回顾、评估和应用临床研究结果,以帮助为患者提供最佳临床护理的过程。循证医学之所以流行,原因如下:在患者护理过程中需要有关诊断、预后、治疗和预防的有效信息;教科书和专家意见等传统信息来源经常过时;自医学院毕业后,随着时间的推移,对当前最佳证据的了解逐渐减少。由于以下因素,循证医学对临床医生来说已变得可行:评估研究的新策略;现有最佳证据的系统评价(综述);以及信息技术(可上网的计算机)。在巴基斯坦这样资源有限的国家,循证医学方法通过减少无确凿益处的临床实践,可能具有成本效益。循证医学通常被认为的障碍包括计算机、互联网和在线资源的获取受限。虽然许多循证医学的可靠资源(如Cochrane系统评价数据库http://www.cochrane.org)需要付费订阅,但仍然可以获取。另一个困难是来自其他国家的数据在我们这个具有不同社会经济因素的环境中对患者的适用性问题。发展中国家循证医学的其他障碍包括:小组学习经验不足、参加研讨会的时间有限以及缺乏循证医学实践的榜样。我们还试图解决与循证医学相关的常见谬误,希望忙碌的临床医生和学术研究人员能更多地运用这些技能。