There are many mental pitfalls and logical stumbling blocks faced by healthcare professionals when attempting to untangle the complex web of patient history and physical exam findings. They can impede our ability to practice high quality medicine at every step in the process, interfering with our ability to establish an accurate diagnosis and to provide comfort or cure. And we are all susceptible, even the most intelligent and experienced among us. In fact, having more intelligence and experience may even enlarge our bias blind spots.
Steven Novella discussed the complexities of clinical decision making in early 2013, specifically tackling some of the more common ways that physicians can come to a faulty conclusion in the third installment of the series. One cognitive bias yet to be specifically addressed on the pages of Science-Based Medicine, and it is one that I encounter regularly in practice, is outcome bias. Simply put, outcome bias in medicine occurs when the assessment of the quality of a clinical decision, such as the ordering of a particular test or treatment, is affected by knowledge of the outcome of that decision. We are prone to assigning more positive significance to a decision when the outcome is positive, and we often react more harshly when the outcome is negative. This bias is particularly obvious when the result of a decision largely comes down to chance.
I see outcome bias rear its ugly head in two contexts for the most part: the Lucky Catch and the Bad Call.
Alternative medicine is ascendant in Canada. From the dubious remedies that are now stocked by nearly every pharmacy, to the questionable “integrative” medicine at universities, there’s a serious move to embrace treatments and practices that are not backed by credible evidence. Canada’s support for alternative medicine, and for its “integration” into conventional health care is arguably is worse than many other countries. Canada’s drugs regulator, Health Canada, has approved hundreds of varieties of sugar pills and declared them to be “safe and effective” homeopathic remedies. Some provinces are even moving to regulate homeopaths as health professionals, just like physicians, nurses and pharmacists. Given the regulatory and legislative “veneer of legitimacy” that homeopathy is being granted, you can see how consumers might be led to believe that homeopathic remedies are effective, or that homeopaths are capable of providing a form of health care. The reality is far uglier, and the consequences may be tragic. Canadian homeopaths are putting the most vulnerable in society at risk by selling sugar pills to consumers, while telling them that they’re getting protection from communicable diseases. (more…)
Steve still happens to be galavanting about Australia, spreading science, skepticism, and, of course, science-based medicine Down Under. Given that, he has been unable to produce new content for today. Never one to let such an opportunity pass, I decided to take advantage in order to do a little shameless self promotion.
A week and a half ago, I gave a talk at Skepticon 7 in Springfield, MO, entitled “The Central Dogma of Alternative Medicine”. It has now been posted on YouTube:
Because some of the sound didn’t come through as well as one might hope, I’m also including the full video of Kim Tinkham that I used early in the talk to illustrate a point. I only used about two minutes’ worth of it, but here is the whole thing, in case you’re interested:
Let me know what you think! And don’t forget to donate to Skepticon, to keep the skeptical goodness coming next year and beyond.
Oh, loneliness and cheeseburgers are a dangerous mix.
– Comic Book Guy
Same can be said of viral syndromes and Thanksgiving. My brain has been in an interferon-induced haze for the last week that is not lifting anytime soon. Tell me about the rabbits, George. But no excuses. I have been reading the works of Chuck Wendig over at Terrible Minds. (Really, really like the Miriam Black books). Writers write and finish what they start and only posers use excuses for not completing their work.
Recently I attended an excellent Grand Rounds on some of the reasons doctors do what they do. Partly it is habit. We learn to a certain way of practice early in our training and it carries on into practice and it is not always best practice. Patients also learn from us and have expectations on what diagnostics or treatments they should receive, and that too it is not always the best practice.
So to educate physicians and patients, the American Board of Internal Medicine (ABIM) started the Choosing Wisely initiative. (more…)
Steve is off today, so I thought it would be a good idea to use this slot for a little shameless self-promotion (of Science-Based Medicine and the Society for Science-Based Medicine, of course).
The Northeast Conference on Science & Skepticism (April 9-12, 2015 in New York City) will be bigger than ever in 2015 with fabulous presenters, exciting panels, and engaging workshops.
We’re thrilled to announce that NECSS 2015 will be co-sponsored by the Society for Science-Based Medicine and will expand to include a third full day of programming! Friday’s schedule will be curated by the team at SfSBM and features content available exclusively at NECSS 2015. Saturday and Sunday schedules will once again feature the best of science and skepticism.
NECSS weekend also includes a special evening performance on Friday, two workshop tracks on Thursday for the early-birds, our popular “Drinking Skeptically” socializers, and more!
The full NECSS speaker line up will be announced shortly, but, as always, Rationally Speaking and the Skeptics’ Guide to the Universe will record live podcasts during the conference.
We have secured discounted room rates at the Hilton Fashion District, located one block from the main conference hall. These rates are available exclusively to NECSS attendees and we will be available shortly.
Conference registration will open in December, but you can like the NECSS Facebook page or follow us on Twitter for updates.
See you in April!
(Editor’s note: I was away at Skepticon over the weekend, where I gave a talk entitled “The Central Dogma of Alternative Medicine”. (When the talk’s up on YouTube, I’ll provide a link, of course.) Because of all the fun and travel delays I didn’t get a chance to turn my slides and notes into a blog post yet. Also, I’m on vacation this week. However, this gives me the opportunity to resurrect a blog post from 2007 on my not-so-super-secret other blog, because I think the concept is interesting. I even use it in a slide that shows up in many of my talks (above). I’ve updated dead links and added some text to include relevant links to posts written since. Enjoy, and I’ll definitely be back next week with original material, if not sooner, given that there are others here who might have the temerity to take part or all of this week off.)
I wish I had thought of this one, but I didn’t. However, I never let a little thing like not having thought of an idea first to stop me from discussing it (even if Steve Novella’s also discussed it), and this particular idea is definitely worth expanding upon because (1) it’s interesting and (2) it combines two of my interests, alternative medicine and evolution. I agree with parts of the idea, but it’s not without its shortcomings. Indeed, I’d very much welcome any of the evolutionary biologists who read this blog to chime in with their own ideas.
A colleague of mine, Martin Rundkvist over at Aardvarchaeology, has proposed a rather fascinating idea regarding the evolution of alternative medicine in which he argues that alternative medicine evolves according to certain selective pressures. As you may or may not know, evolution is not just for biology, but has been proposed as a mechanism in cultural memes, for example. Since alternative medicine is a cultural phenomenon, it is not unreasonable to look at such non-evidence-based medicine and hypothesize what might be the selective pressures that shape its popularity and evolution. After all, if we’re going to discourage the use of non-evidence-based medicine or even quackery, it’s helpful to understand it. We already know that alt-med terminology has evolved considerably into the current preferred term, “integrative medicine.” (See also the image above and my blog posts on this evolution here and here.)
This is not for kids?
Last month I wrote a post on the causes of poor sleep in adolescents, as well as the myriad problems that can result in this high-risk population. Fortunately there is a system-wide public health measure proven to work, and now groups like the American Academy of Pediatrics are fully endorsing it. In that post, I briefly mentioned the increasing popularity of energy drinks and shots as caffeine delivery devices, and their role as both a potential cause of sleep deprivation and a means of temporarily ameliorating the effects.
I have been planning on addressing in greater detail the intentional, and unfortunately often accidental, ingestion of energy drinks in the pediatric population and the various associated risks for quite a while. What finally motivated me to get to work on this topic was the recent spate of media coverage regarding the results of a study presented this week at the American Heart Association’s Scientific Sessions 2014. The research, which involved the analysis of data obtained from the National Poison Data System for October 2010 through September 2013, supports concerns that pediatricians and other pediatric healthcare professionals have had for a very long time. Energy drinks are dangerous, particularly in young children, and a large part of the blame falls on the shoulders of manufacturers as well as the 1994 Dietary Supplement Health and Education Act (DSHEA) so frequently discussed on SBM.
Before I break down the scary numbers from the study, first a little background on energy drinks. (more…)
One of my early forays into the world of pseudoscience was an investigation of “Vitamin O” (the O stands for oxygen). The story is hilarious; please click and read; I guarantee you won’t be able to read it without at least a chuckle. Vitamin O is still for sale; it’s even available on Amazon.com. You can read the manufacturer’s ridiculous rationalizations about the FTC’s and FDA’s regulatory actions against them and their bogus “research” here. In my article, I mentioned oxygen bars, which were popular at the time. I was under the impression that they had gone out of fashion since then. Alas, no.
Dr. Stephen Barrett of Quackwatch e-mailed me to suggest that I might want to write about the O2 Planet website. It calls itself “the largest oxygen bar and oxygen spa source on the planet.” I can’t decide whether to thank Dr. Barrett for steering me to a source of entertainment and making me laugh or curse him for making me suffer through a disgusting collection of pseudoscientific rubbish. Some of the company’s claims are listed on the graphic above. (more…)
Low body temperature! Do you have Wilson’s Temperature Syndrome?
This is another in an irregular series of posts that puts the statements of naturopaths up against the scientific evidence
How are you feeling today? Tired? Lethargic? Chilled? Lacking energy? Is it the nature of life – or is it something more serious? If you consult with a naturopath, you could walk out diagnosed with something called Wilson’s Temperature Syndrome. But the naturopath would be wrong, because Wilson’s Temperature Syndrome is a fake disease.
One of the hallmarks of alternative medicine is the “fake disease”. Fake diseases don’t actually exist – they are invented without any objective evidence showing that they are real. Fake diseases tend to emerge from vague symptoms which can’t be attributed to a specific medical diagnosis. This is not to say what patients are experiencing isn’t real – the issue is the diagnosis, and the practitioner making the call. As has been pointed out by other SBM contributors, it’s understandable to want reasons and answers when you have debilitating symptoms. But symptoms need to be studied in rational and objective ways in order to understand the underlying illness – call it the “root cause” if you prefer. The diagnosis guides the treatment plan, so getting a diagnosis right is essential. While a group of vague symptoms might lead a medical doctor to run tests to rule out serious illness, alternative medicine providers already know the underlying problem. It’s your Chi. Your energy fields. Your diet. Whatever it is, it’s usually your fault. Adrenal fatigue is a fake disease. So is multiple chemical sensitivity, and Morgellons (delusional parsitosis). “Chronic” Lyme disease is another fake disease. Rather than offer a guide to proper care, a fake disease is a distraction from the truth. (more…)
One of the most interesting aspects of living through the second half of the 20th century and into the first half of the 21st century is the profound change in access to information. I remember in the 1980s there was a buzz (at least among technophiles and science fiction nerds) about how computers were going to be connected in a worldwide network and it would transform the way we access information and communicate. The reality we are living in now exceeds even the most fevered predictions being made at that time.
What was difficult to anticipate was how rapid access to almost any information would affect our day-to-day lives. Now, during a discussion, if a fact is in dispute we can simply look it up and resolve the dispute. I can no longer imagine doing research in a pre-internet age, promoting science-based medicine without social media, or collaborating without the virtual-time communication of e-mail.
The internet is rapidly becoming humanity’s collective culture and body of knowledge. For that reason it is important to nurture that body of knowledge to ensure that it is complete, accurate, and fair. That goal is frustrated, however, by the fact that the World Wide Web is not simply being used for scholarly information. It is also a tool to promote ideology and commercial interests. Therefore any efforts to provide scientifically accurate and unbiased information are likely to be swamped by well-funded and highly-motivated misinformation. Search on any medical topic and you will quickly see what I mean.