This essay is the latest in the series indexed at the bottom.* It follows several (nos. 10-14) that responded to a critique by statistician Stephen Simon, who had taken issue with our asserting an important distinction between Science-Based Medicine (SBM) and Evidence-Based Medicine (EBM). (Dr. Gorski also posted a response to Dr. Simon’s critique). A quick-if-incomplete Review can be found here.
One of Dr. Simon’s points was this:
I am as harshly critical of the hierarchy of evidence as anyone. I see this as something that will self-correct over time, and I see people within EBM working both formally and informally to replace the rigid hierarchy with something that places each research study in context. I’m staying with EBM because I believe that people who practice EBM thoughtfully do consider mechanisms carefully. That includes the Cochrane Collaboration.
To which I responded:
We don’t see much evidence that people at the highest levels of EBM, eg, Sackett’s Center for EBM or Cochrane, are “working both formally and informally to replace the rigid hierarchy with something that places each research study in context.”
Well, perhaps I shouldn’t have been so quick to quip—or perhaps that was exactly what the doctor ordered, as will become clear—because on March 5th, nearly four months after writing those words, I received this email from Karianne Hammerstrøm, the Trials Search Coordinator and Managing Editor for The Campbell Collaboration, which lists Cochrane as one of its partners and which, together with the Norwegian Knowledge Centre for the Health Services, is a source of systematic reviews:
If there’s one thing about the so-called “complementary and alternative medicine” (CAM) movement that I’ve emphasized time and time again, it’s that its adherents have a definite love-hate relationship with science. They hate it because it is the single greatest threat to their beliefs system and the pseudoscience that underlies it. At the same time, they crave the legitimacy that science confers. They crave it not because they have any great love for science. Quite the contrary. It is simply that they recognize that science actually delivers the goods. Of course, they believe that they deliver the goods too, but they come to this belief not through science but rather through all the cognitive shortcomings and biases to which humans are prone, such as confusing correlation with causation, confirmation bias, not recognizing regression to the mean, and being fooled by the placebo effect. Whether it’s through a misunderstanding of science or less innocent reasons, they go to great lengths to torture it into superficially appearing to support their claims through a combination of cherry-picking of studies that seem to support them and misrepresenting ones that don’t, discussions of which abound right here in this very blog.
The other thing I’ve emphasized about the CAM movement is that, even more than scientific credibility, they crave legitimacy. To them, however, science is but one pathway to legitimacy, because, unlike practitioners of science-based medicine, they are more than willing to bypass science to obtain the legitimacy–or at least the appearance of the legitimacy–they so crave. If it means doing an end run around science by trying to hijack the Obama health insurance reform bill that is currently being negotiated to resolve the differences between the Senate and House versions, so be it. Indeed, earlier this year, I described how Senator Tom Harkin has tried to promote CAM through the National Center for Complementary and Alternative Medicine (NCCAM) and trying to insert provisions into the bill that would mandate that government-subsidized insurance exchanges pay for CAM. Meanwhile, prominent CAM advocates have been carpet-bombing the media with dubious arguments in support of CAM, as in when Deepak Chopra, Rustum Roy, Dean Ornish, and Andrew Weil teamed up in different combinations to promote the idea that CAM is all about “prevention” and that science-based medicine, in all its reductionistic evil, is nothing more than pushing pills.
They’re at it again.