Download Lectures on Biostatistics (1971). Corrected and searchable version of Google books edition
Download review of Lectures on Biostatistics (THES, 1973).
subluxation
Chiropractors are getting very touchy indeed, all over the world. And no wonder, because their claims are being exposed as baseless as never before, in the wake of their attempts to stifle criticism by legal action..
In March, Shaun Holt appeared on Breakfast TV in New Zealand. Holt has done a lot of good work on TV in debunking some of the preposterous claims made by quacks. See him on YouTube.
This time he talked about chiropractic. Here is the video.
One could argue that he was over generous to chiropractic, especially when talking about their effectiveness in treating low back pain. He said, quite rightly, that chiropractors are no better than physiotherapists at treating low back pain.
But a recent trial suggests that neither are much good. “A randomised controlled trial of spinal manipulative therapy in acute low back pain” (Juni et al., 2009 in the BMJ; see also coverage in Pulse). This trial compared standard care with standard care plus spinal manipulative therapy (SMT). The results were negative, despite the fact that this sort of A + B vs B design is inherently biassed in favour of the treatment (see A trial design that generates only ”positive” results, Ernst & Lee 2008, Postgrad Med J.).
"SMT was performed by a specialist in manual medicine, chiropractice and rheumatology (GH), a specialist in physical medicine (DV) or an osteopath (RvB), all proficient in SMT."
"Conclusions: SMT is unlikely to result in relevant early pain reduction in patients with acute low back pain."
Admittedly, the trial was quite small (104 patients, 52 in each group) so it will need to be confirmed. but the result is entirely in line with what we knew already.
It also adds to the evidence that the recommendation by NICE of SMT by chiropractors constitutes their biggest failure ever to assess evidence properly. If NICE don’t amend this advice soon, they are in danger of damaging their hitherto excellent record.
Despite the moderate tone and accuracy of what Holt said on TV, the New Zealand Chiropractors’ Association made a formal complaint. That is what they like to do, as I learned recently, to my cost. It is so much easier than producing evidence.
Quite absurdly the New Zealand Broadcasting Standards Authority (BSA) has upheld some of the complaints. Their judgement can be read here.
The BSA consists of four people, two lawyers and two journalists. So not a trace of scientific expertise among them. Having people like that judging the claims of chiropractors makes as much sense as having them judged by Mr Justice Eady. They seem to be the sort of people who think that if there is a disagreement, the truth must lie half-way between the opposing views.
One of the BSA members, Tapu Misa, has used her newspaper column to quote approvingly the views of the notorious Dr Mercola web site on flu prevention “Your best defence, it says, is to eat right, get lots of sleep, avoid sugar and stress, load up on garlic, Vitamin D and krill oil”. (Snake oil is said to be good too.) There are some odd attitudes to science in some of her other columns too (e.g. here and here). Not quite the person to be judging the evidence for and against chiropractic, I think.
In fact the TV show in question was more than fair to chiropractors. It adopted the media’s usual interpretation of fair and balanced: equal time for the flat earthers. A Chiropractor was invited to reply to Holt’s piece. Here he is.
The chiropractor, Doug Blackbourn, started very plausibly, though a tendency to omit every third syllable made transcription hard work. He established that if you cut yourself you get better (without any help). He established that nerves run down the spinal cord. So far, so good. But then he quickly moved on to the usual flights of fancy.
"We have two premises. The body heals itself and the nervous system runs the body. Now the nervous system runs the body, travels down through the spinal cord so chiropractic is not based on the belief that, you know, energy flows, it’s based on the fact that your nervous system runs the body and [inaudible] affects the overall health of the body"
This statement is totally vague. It has nothing whatsoever to do with the main question, can chiropractors do anything useful. It is sheer flannel.
We’re seeing people, heck, diabetes. I had a quadriplegic come in one time for adjustment, we’ve got stroke people, we’ve got all sorts of conditions. We’re not treating the condition, We’re allowing, checking the spine to see if there’s any interference there that will slow the body down"
“Interference”? “slowing the body down”? These are utterly meaningless phrases that simply serve to distract from the only question that matters.
"Chiropractice is the most safest [sic] profession to go to to get your spine adjusted"
Hmm I thought it was the only job that uses the word ‘adjustment’.
Worst of all was his response to a question about asthma.
Presenter: "So chiropractors are not out there claiming they will cure asthma for example?". Chiropractor: "No"
This is simply untrue, both in New Zealand and in the UK. For a start, just look at what Blackbourn’s own web site says about asthma.
"The challenge, of course, with allergy and asthma medication is there is no end-point. There is no cure. Asthma and allergies, for the most part, are lifelong conditions requiring lifelong medication. Might there be a better way, an alternative solution?
“Alternative” is the key word. Medical treatment is designed to combat symptoms, and is successful to a certain extent with allergies and asthma. Underlying causes are not addressed, however, and symptoms continue year after year. What else might be done?
Enter chiropractic care. Chiropractic health care, with its unique comprehensive approach, is able to offer positive benefit to a variety of conditions and ailments. In the case of allergies and asthma, these “hypersensitivity conditions” may respond well to therapy designed to normalize the body’s flow of nerve signals. To use a metaphor, chiropractic treatment removes roadblocks to the body’s natural healing abilities. Restoring these imbalances may help reduce such hypersensitivity reactions."
Blackbourn’s web site describes him thus
"As a Doctor of Chiropractic, Dr. Doug Blackbourn . . ."
But the qualifications of “Dr” Blackbourn are B.App.Sc (Chiro) M.N.Z.C.A , the same as those of “Dr” Brian Kelly.
After a performance like this, perhaps someone should submit a complaint to the New Zealand Broadcasting Standards Authority.
After all, I notice that they have dismissed complaints from one chiropractor, Sean Parker, after a TV programme looked at the business practices of his private chiropractic practice, The Spinal Health Foundation. Perhaps the BSA understands business better than it understands science.
Follow-up
Is chiropractic crumbling in New Zealand? The New Zealand College of Chiropractic featured in my editorial in the New Zealand Medical Journal, and in the fallout from that article, It’s principle, “Dr” Brian Kelly (B App Sci (Chiro)) seems to be getting desperate. His college is now canvassing for recruits in Canada. They are promised all the woo.
- Subluxation centered techniques – Gonstead, Toggle Recoil, Thompson, Diversified
- Traditional philosophy featuring vitalism and innate healing – congruent curriculum
Perhaps Canada is a good place to recruit, gven the $500 million class action being brought against chiropractors in Canada, after Sandra Nette became tetraplegic immediately after a chiropractor manipulated her neck, Canadian chiropractors must be looking for somewhere to hide.
Stuff and Nonsense. jdc described this story at the time the complaint was lodged.
Shaun Holt’s own blog follows the action.
New Zealand Doctor covers the story.
Bay of Plenty Times “Bay researcher slams television complaint ruling“
That isn’t my title. It is the title of a post by Richard Lanigan, with whom I’ve been corresponding. He has a major grudge against the General Chiropractic Council. And in particular he is disaffected about the GCC’s chair, Peter Dixon, about whom he has written a lot, I can’t judge the details of his complaints, but they are laid out in detail on his blog, http://chiropracticlive.com/
Particular interest attaches to his recent revelation of a letter that was sent on July 8th to its members by the McTimoney Chiropractic Association. The McTimoney sect of chiropractic are the ‘true believers’ in the most mystical codswallop aspects of the subject. Oddly enough their College has been validated by the University of Wales, I’ve put in a Freedom of Information Act reguest to the University of Wales to see how that happened. Watch this space.
My interpretation of this letter is that it is as near as you can get to an admission, by chiropractors themselves, that many chiropractors make claims that are against the law. And worse still, that the McTimoney Chiropractic Assocation is well aware of that.
News travels fasts in the blogosphere. This item has already appeared today on The Quackometer, The Lay Scientist and Gimpy and on Zeno’s blog. Let’s hope that the news spreads far and wide.
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Date: 8 June 2009 09:12:18 BDT Subject: FURTHER URGENT ACTION REQUIRED! Dear Member If you are reading this, we assume you have also read the urgent email we sent you last Friday. If you did not read it, READ IT VERY CAREFULLY NOW and – this is most important – ACT ON IT. This is not scaremongering. We judge this to be a real threat to you and your practice. Because of what we consider to be a witch hunt against chiropractors, we are now issuing the following advice: The target of the campaigners is now any claims for treatment that cannot be substantiated with chiropractic research. The safest thing for everyone to do is as follows.
When you have done that, please let us know preferably by email or by phone. This will save our valuable time chasing you to see whether it has been done.
CHECK ALL ENTRIES CAREFULLY AND IF IN DOUBT, CONTACT THE RELEVANT PROVIDER TO REMOVE YOUR INFORMATION. CHECK OUR PREVIOUS EMAILS FOR SPECIFIC ADVICE AND KEY WORDS TO AVOID. KEEP A LOG OF YOUR ACTIONS.
5. Be wary of ‘mystery shopper’ phone calls and ‘drop ins’ to your practice, especially if they start asking about your care of children, or whiplash, or your evidence base for practice. IF YOU DO NOT FOLLOW THIS ADVICE, YOU MAY BE AT RISK FROM PROSECUTION. IF YOU DO NOT FOLLOW THIS ADVICE, THE MCA MAY NOT BE ABLE TO ASSIST YOU WITH ANY PROCEEDINGS. Although this advice may seem extreme or alarmist, its purpose is to protect you. The campaigners have a target of making a complaint against every chiropractor in the UK who they perceive to be in breach of the GCC’s CoP, the Advertising Standards Code and/or Trading Standards. We have discovered that complaints against more than 500 individual chiropractors have been sent to the GCC in the last 24 hours. Whatever you do, do not ignore this email and make yourself one of the victims. Some of our members have not followed our earlier advice and now have complaints made against them. We do not want that to happen to you. Even if you do not have a website, you are still at risk. Our latest information suggests that this group are now going through Yellow Pages entries. Be in no doubt, their intention is to scrutinise every single chiropractor in the UK. The MCA Executive has worked tirelessly over the last week keeping abreast of development and contacting at risk members. We have decided that this is our best course of action to protect you and the Association at this time of heightened tension. This advice is given to you solely to protect you from what we believe is a concerted campaign, and does not imply any wrongdoing on your part or the part of the Association. We believe that our best course of action is simply to withdraw from the battleground until this latest wave of targeting is over. Finally, we strongly suggest you do NOT discuss this with others, especially patients, Firstly it would not be ethical to burden patients with this, though if they ask we hope you now have information with which you can respond. Most importantly, this email and all correspondence from the MCA is confidential advice to MCA members alone, and should not be shared with anyone else. Please be aware that the office phone lines are likely to be busy, so, if you need our help, please send an email to the office and we will get back to you as soon as we can. Yours, Berni Martin MCA Chair. Best wishes, Nicki Nicki Choules-Rowe Administrative Officer – Executive Liaison McTimoney Chiropractic Association Crowmarsh Gifford Wallingford OX10 8DJ Tel : 01491 829494 |
Follow-up
The deleted pages are here. Thanks again to quackometer, here is where you can see the pages that might have been taken down as a result of McTimoney’s letter. I hope they won’t grumble. Really, they sjould never have put them up if they weren’t true, should they?.
The publication of Gilbey’s paper and my editorial in the New Zealand Medical Journal (NZMJ) led to a threat of legal action by the NZ Chiropractors’ Association Inc for alleged defamation. After publishing a defiant editorial, the editor of the NZMJ offered chiropractors the chance to put their case.
In the last issue of NZMJ (22 Aug 2008) three letters appeared. One was from Brian Kelly, (President, New Zealand College of Chiropractic) [download letter]. One was from Karl Bale (CEO/Registrar, Chiropractic Board New Zealand) [download letter], and one was from Simon Roughan (Registered Chiropractor and Acting President of the New Zealand Chiropractors’ Association) [download letter].
In the current issue (5 September 2008) Gilbey, Ernst and I responded.{download Gilbey response] [download Ernst response].
Here’s mine. The printed version differs in minor ways [download pdf]
| I’m grateful for the opportunity to reply to the defences of chiropractic from Kelly1, Roughan2 and Bale3 in your last issue.
I’d like first to deal with the minor matter of titles, before getting on to the more important question of vidence. I notice that Brian Kelly signs his letter “Dr Brian Kelly B App Sci (Chiro)” in his letter to NZMJ. He seems to be a bit less careful in his use of titles on his own school’s web site where his president’s welcome4 is signed simply “Dr Brian Kelly”, a title he adopts in at least three other places. Karl Bale3 (CEO/Registrar, Chiropractic Board New Zealand) points out that “Failure to qualify the use of the title ‘Doctor’ may contravene the provisions of the Medical Practitioners Act 1995”. One wonders whether Bale has done anything to stop Kelly’s apparent breaches of this rule? This example makes on wonder whether the Chiropractic Board take its responsibilities seriously? It seems often to be the case that ‘voluntary self-regulation’ doesn’t work, because there are too many vested interests. Karl Bale points out that some ruthless sales methods characteristic of chiropractic are also contrary to the Chiropractic Board’s code of ethics. One would hope their well-known antipathy to vaccination and to medicine as a whole were also considered unethical. These practices seem to continue so the the code of ethics It seems to me quite remarkable that none of the letters mentions the ‘subluxation’ that lies at the heart of their subject6. Could that be because they are reluctant to admit openly that it is a mere metaphysical concept, that no one can see or define? It is sad that so many patients are subjected to X-rays in search of this phantom idea. It is this metaphysical nature of chiropractic that separates it quite clearly from science. Brian Kelly says “How can any reader take seriously, anything suggested by a writer who opines that a 19th Century journalist possessed superior “intellectual standards” to “the UK’s Department of Health” and “several university vice chancellors”. The views of the Davenport Leader on chiropractic were mild compared with those of the great H.L. Mencken (1924)7 who wrote “This preposterous quackery flourishes lushly in the back reaches of the Republic, and begins to conquer the less civilized folk of the big cities….” The problem is that the Department of Health is full of arts graduates who may be very good at classics but can’t understand the nature of evidence. And the UK has one vice-chancellor, a geomorphologist, who defends a course in his university that teaches that “amethysts emit high yin energy”8 I’ll admit, though, that perhaps ‘intellect’ is not what’s deficient in this case, but rather honesty. Your correspondents seem to confuse the duration of a course with its intellectual content. You can study homeopathy for years too, but after all that they are still treating sick people with medicines that contain no medicine. Anyone who works in a university knows that you can easily get accreditation for anything whatsoever if you choose the right people to sit on the committee. I have seen only too many of these worthless pieces of paper. “Amethysts emit high yin energy”8 was part of an accredited course (at the University of Westminster) too. Need I say more? Now to the real heart of the problem, namely the question of evidence. Brian Kelly says that the book by Singh and Ernst9 shows “extreme bias”, but what that book actually shows is an extremely scrupulous regard for evidence, Ernst is in a better position to do this than just about anyone else. He has qualified and practised both regular and alternative medicine, and he was appointed to his present position, as professor of complementary and alternative medicine to assess the evidence. Perhaps most importantly of all, his position allows him to do that assessment with complete lack of bias because, unlike Kelly, his livelihood does not depend on any particular outcome of the assessment. I’m afraid that what Kelly describes as “extreme bias” is simply a display of pique because it has turned out that when all the evidence is examined dispassionately, the outcome is not what chiropractors hoped. The fact of the matter is that when you look at all of the evidence, as Singh & Ernst do, it is perfectly clear that chiropractic is at best no better than conventional treatments even for back pain. For all other conditions its benefits fail to outweigh its risks – contrary to the many claims by chiropractors. Both the New Zealand and the UK governments have got themselves into an impossible position by giving official recognition to chiropractic before the evidence was in. Since the conventional manipulative treatments are cheaper, and may be well be safer, and because they involve no quasi-religious ideas like “subluxation” or “innate intelligence”, the only reasonable conclusion is that there is no need for chiropractic to exist at all. They do nothing they do that could not be done as well by medical practitioners and physiotherapists. What will governments do about that, I wonder? David Colquhoun 1. Kelly, B. New Zealand College of Chiropractic response to 2. Roughan, S. Setting the record straight: New Zealand Chiropractors’ Association response letter. NZMJ 22 3. Bale, 4. http://www.nzchiro.co.nz/about_president.php 6. http://www.chirobase.org/01General/chirosub.html 7. http://www.geocities.com/healthbase/mencken_chiro.html 8. http://dcscience.net/?p=227 9. Singh S, Ernst E. Trick or Treatment. Bantam Press; 2008 |
The wars within chiropractic
Although the chiropractors seem to be rather upset by the criticisms that have been levelled against them, the most interesting war is not between chiropractors and people who think that medicine should not be based on metaphysics. It’s the war within chiropractic itself.
The internecine wars within chiropractic have been going almost from the day it was invented. The (ex-)insider’s view gives us a rare insight into what chiropractic schools actually do. Now support has come from a rather unexpected quarter. An article by five chiropractors has just appeared by Murphy et al. (Chiropractic & Osteopathy, 2008, 16:10).
Although the authors declare that they have “a financial interest in the success” of chiropractic, the changes that they propose are so drastic that, if implemented, tthey would leave little left to distinguish chiropractic from, say, physiotherapy. The authors ask the very pertinent question, ‘why is it that podiatry (chiropody in the UK) is well accepted and chiropractic remains on the controversial fringe of medicine?.. Here are some quotations.
“It is also vital that those chiropractors who dogmatically oppose common public health practices, such as immunization [15] and public water fluoridation, cease such unfounded activity.”
“We are concerned that the common perception (which is well supported, in our experience) that chiropractors are only interested in “selling” a lifetime of chiropractic visits may be one of the primary factors behind our low standing in the minds of members of the public [2].”
“One of the problems that we encounter frequently in our interaction with chiropractic educational institutions is the perpetuation of dogma and unfounded claims. Examples include the concept of spinal subluxation as the cause of a variety of internal diseases and the metaphysical, pseudo-religious idea of “innate intelligence” flowing through spinal nerves, with spinal subluxations impeding this flow. These concepts are lacking in a scientific foundation [27] [28] [29] and should not be permitted to be taught at our chiropractic institutions as part of the standard curriculum. Much of what is passed off as “chiropractic philosophy” is simply dogma [30], or untested (and, in some cases, untestable) theories [27] which have no place in an institution of higher learning, except perhaps in an historical context.”
“The Council on Chiropractic Education requirement of 250 adjustments forces interns to use manipulation on patients whether they need it or not, and the radiographic requirement forces interns to take radiographs on patients whether they need them or not.”
“They [podiatrists] did not invent a “lesion” and a “philosophy” and try to force it on the public. They certainly did not claim that all disease arose from the foot, without any evidence to support this notion. The podiatric medical profession simply did what credible and authoritative professions do [32] – they provided society with services that people actually wanted and needed.”
“In the beginning, DD Palmer invented a lesion, and a theory behind this lesion, and developed a profession of individuals who would become champions of that lesion. This is not what credible professions do.”
“In the interim it [chiropractic] has seen its market share dwindle from 10% of the population [4] to 7.5% [3] [42]. Even amongst patients with back pain, the proportion of patients seeing chiropractors dropped significantly between 1987 and 1997, a period of time in which the proportion seeing both medical doctors and physical therapists increased [43].”
“When an individual consults a member of any of the medical professions, it is reasonably expected that the advice and treatment that he or she receives is based in science, not metaphysics or pseudoscience.”
“The chiropractic profession has an obligation to actively divorce itself from metaphysical explanations of health and disease as well as to actively regulate itself in refusing to tolerate fraud, abuse and quackery, which are more rampant in our profession than in other healthcare professions [46].”
“Podiatric medicine is a science-based profession dedicated to the diagnosis and treatment of foot disorders. Foot reflexology is a metaphysically-based group consisting of non-physicians who believe that many physical disorders arise from the foot. Podiatrists have rejected foot reflexology as an unproven and unscientific practice, and do not consider it part of mainstream podiatric practice.”
“We must finally come to the painful realization that the chiropractic concept of spinal subluxation as the cause of “dis-ease” within the human body is an untested hypothesis [27]. It is an albatross around our collective necks that impedes progress.”
All this, remember, comes from five chiropractors. That looks like all out war between their view of chiropractic and that taught in New Zealand College of Chiropractic, and, in the UK by the three chiropractic colleges in the UK.
Follow-up
A report in the New Zealand Herald (18 September 2008) is rather relevant to all this.
Chiropractor to apologise after patient has stroke
A chiropractor has been recommended to apologise to a woman patient who suffered a stroke after he treated her.
The case report is here.
The Advertising Standards Authority has had a bit to say about chiropractors too.