The British Medical Journal recently undertook an general analysis of common medical treatments to determine which are supported by sufficient reliable evidence. They evaluated around 2,500 treatments, and the results were as follows:
-13 percent were found to be beneficial
-23 percent were likely to be beneficial
-Eight percent were as likely to be harmful as beneficial
-Six percent were unlikely to be beneficial
-Four percent were likely to be harmful or ineffective.
This left the largest category, 46 percent, as unknown in their effectiveness. In other words, when you take your sick child to the hospital or clinic, there is only a 36 percent chance that he will receive a treatment that has been scientifically demonstrated to be either beneficial or likely to be beneficial. This is remarkably similar to the results Dr. Brian Berman found in his analysis of completed Cochrane reviews of conventional medical practices. There, 38 percent of treatments were positive and 62 percent were negative or showed “no evidence of effect.”
For those who have been paying attention, this is not news. Back in the late 70’s the Congressional Office of Technology Assessment determined that a mere 10 to 20 percent of the practices and treatment used by physicians are scientifically validated. It’s sobering to compare this number to the chances that a patient will receive benefit due to the placebo effect, which is between 30 percent and 50 percent, according to various studies. www.fas.org/ota/reports/7805.pdf
We all marvel at the technological advances in materials and techniques that allow doctors to perform quadruple bypass surgeries and angioplasties without marveling that recent studies indicate that coronary bypass surgery will extend life expectancy in only about three percent of cases. For angioplasty that figure sinks to zero percent. Those numbers might be close to what you could expect from a witch doctor, one difference being that witch doctors don’t submit bills in the tens of thousands of dollars.