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Daily Archives: June 3, 2014

The Evidence House: How to Build an Inclusive Base for Complementary Medicine

By |June 3, 2014|Evidence-based Medicine|

The Evidence House: How to Build an Inclusive Base for Complementary Medicine

The Chiro.Org Blog

SOURCE:   West J Med 2001 (Aug);   175 (2):   79–80

Wayne B Jonas

Department of Family Medicine Uniformed Services
University of the Health Sciences
Bethesda, MD 20814

We all want good evidence available when making medical decisions. Evidence, however, comes in a variety of forms and purposes, and what may be good for one purpose may not be good for another. The term “evidence-based medicine” (EBM) has become almost a cliché in recent years, being used as a synonym for “good” or “scientific,” both to support and refute the value of complementary medicine practices. [1] But EBM takes a narrow view of what constitutes “good” evidence, and it excludes important qualitative and observational information about the use and benefits of complementary medicine.

The key idea of EBM is a “hierarchy of evidence” (figure 1). In this hierarchy, information from systematic reviews of randomized controlled trials is the “best” evidence, followed by individual randomized controlled trials, then by nonrandomized trials, observational studies, and finally case-series. [2] When the evidence of what type of medicine works and what type does not is synthesized, the type of emphasis is at the top of the pyramid, and the evidence that is considered inferior is at the lower levels. Clinical experiments that isolate a causal and additive link between a specific intervention and a specific clinical outcome are seen as the “gold standard” in this evidence model.

Figure 1:   The traditional hierarchy of evidence is narrow

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