The leading ethical position on placebo-controlled clinical trials is that whenever proven effective treatment exists for a given condition, it is unethical to test a new treatment for that condition against placebo. Invoking the principle of clinical equipoise, opponents of placebo-controlled trials in the face of proven effective treatment argue that they (1) violate the therapeutic obligation of physicians to offer optimal medical care and (2) lack both scientific and clinical merit. We contend that both of these arguments are mistaken. (...) Clinical equipoise provides erroneous ethical guidance in the case of placebo-controlled trials, because it ignores the ethically relevant distinction between clinical trials and treatment in the context of clinical medicine and the methodological limitations of active-controlled trials. Placebo controls are ethically justifiable when they are supported by sound methodological considerations and their use does not expose research participants to excessive risks of harm. (shrink)

Are clinical practice guidelines a means for improving the quality of health care? For saving money in the health care system? For solving the malpractice problem? For making the health care system work better for all? Or, are they a recipe for disaster? This overview sets out conceptual, definitional, and practical aspects of clinical practice guidelines as a broad framework for reflecting on the issue of what guidelines are and why they count. It draws mainly on work done since 1990 (...) at the Institute of Medicine and focuses on five questions. First, what are guidelines, and who develops them? Second, what criteria or principles should be used to create good guidelines? Third, what problems or pitfalls exist in developing and disseminating guidelines? Fourth, in what ways can guidelines help improve medical care, and in what ways will they not be as practical or useful, particularly with respect to quality of care? Finally, what ethical context might guide deliberations on this topic? (shrink)