Yesterday, BBC NEWS published the following interesting text about a BBC4 broadcast entitled ‘THE ROYAL ACTIVIST’ aired on the same day:
Prince Charles has been a well-known supporter of complementary medicine. According to a… former Labour cabinet minister, Peter Hain, it was a topic they shared an interest in.
“He had been constantly frustrated at his inability to persuade any health ministers anywhere that that was a good idea, and so he, as he once described it to me, found me unique from this point of view, in being somebody that actually agreed with him on this, and might want to deliver it.”
Mr Hain added: “When I was Secretary of State for Northern Ireland in 2005-7, he was delighted when I told him that since I was running the place I could more or less do what I wanted to do.***
“I was able to introduce a trial for complementary medicine on the NHS, and it had spectacularly good results, that people’s well-being and health was vastly improved.
“And when he learnt about this he was really enthusiastic and tried to persuade the Welsh government to do the same thing and the government in Whitehall to do the same thing for England, but not successfully,” added Mr Hain.
*** obviously there is no homeopathic remedy for megalomania (but that’s a different story)
SPECTACULARLY GOOD RESULTS?
Let’s have a look at the ‘trial’ and its results. An easily accessible report provides the following details about it:
From February 2007 to February 2008, Get Well UK ran the UK’s first government-backed complementary therapy pilot. Sixteen practitioners provided treatments including acupuncture, osteopathy and aromatherapy, to more than 700 patients at two GP practices in Belfast and Derry.
The BBC made an hour long documentary following our trials and tribulations, which was broadcast on BBC1 NI on 5 May 2008.
Aims and Objectives
The aim of the project was to pilot services integrating complementary medicine into existing primary care services in Northern Ireland. Get Well UK provided this pilot project for the Department for Health, Social Services and Public Safety (DHSSPS) during 2007.
The objectives were:
- To measure the health outcomes of the service and monitor health improvements.
- To redress inequalities in access to complementary medicine by providing therapies through the NHS, allowing access regardless of income.
- To contribute to best practise in the field of delivering complementary therapies through primary care.
- To provide work for suitably skilled and qualified practitioners.
- To increase patient satisfaction with quick access to expert care.
- To help patients learn skills to improve and retain their health.
- To free up GP time to work with other patients.
- To deliver the programme for 700 patients.
The results of the pilot were analysed by Social and Market Research, who produced this report.
The findings can be summarised as follows:
Following the pilot, 80% of patients reported an improvement in their symptoms, 64% took less time off work and 55% reduced their use of painkillers.
In the pilot, 713 patients with a range of ages and demographic backgrounds and either physical or mental health conditions were referred to various complementary and alternative medicine (CAM) therapies via nine GP practices in Belfast and Londonderry. Patients assessed their own health and wellbeing pre and post therapy and GPs and CAM practitioners also rated patients’ responses to treatment and the overall effectiveness of the scheme.
• 81% of patients reported an improvement in their physical health
• 79% reported an improvement in their mental health
• 84% of patients linked an improvement in their health and wellbeing directly to their CAM treatment
• In 65% of patient cases, GPs documented a health improvement, correlating closely to patient-reported improvements
• 94% of patients said they would recommend CAM to another patient with their condition
• 87% of patient indicated a desire to continue with their CAM treatment
Painkillers and medication
• Half of GPs reported prescribing less medication and all reported that patients had indicated to them that they needed less
• 62% of patients reported suffering from less pain
• 55% reported using less painkillers following treatment
• Patients using medication reduced from 75% before treatment to 61% after treatment
• 44% of those taking medication before treatment had reduced their use afterwards
Health service and social benefits
• 24% of patients who used health services prior to treatment (i.e. primary and secondary care, accident and emergency) reported using the services less after treatment
• 65% of GPs reported seeing the patient less following the CAM referral
• Half of GPs said the scheme had reduced their workload and 17% reported a financial saving for their practice
• Half of GPs said their patients were using secondary care services less.
Impressed? Well, in case you are, please consider this:
- there was no control group
- therefore it is not possible to attribute any of the outcomes to the alternative therapies offered
- they could have been due to placebo-effects
- or to the natural history of the disease
- or to regression towards the mean
- or to social desirability
- or to many other factors which are unrelated to the alternative treatments provided
- most outcome measures were not objectively verified
- the patients were self-selected
- they would all have had conventional treatments in parallel
- this ‘trial’ was of such poor quality that its findings were never published in a peer-reviewed journal
- this was not a ‘trial’ but a ‘pilot study’
- pilot studies are not normally for measuring outcomes but for testing the feasibility of a proper trial
- the research expertise of the investigators was close to zero
- the scientific community merely had pitiful smiles for this ‘trial’ when it was published
- neither Northern Ireland nor any other region implemented the programme despite its “spectacularly good results”.
So, is the whole ‘trial’ story an utterly irrelevant old hat?
Certainly not! Its true significance does not lie in the fact that a few amateurs are trying to push bogus treatments into the NHS via the flimsiest pseudo-research of the century. The true significance, I think, is that it shows how Prince Charles, once again, oversteps the boundaries of his constitutional role.
Some time ago, I published a post entitled HOW TO BECOME A CHARLATAN. This prompted ‘THE NORWEGIAN ACADEMY OF SCIENCE AND LETTERS’ to invite me to give a lecture on the subject, a great honour, I am sure. Consequently, I have thought about this somewhat unusual subject quite a lot.
Obviously, my thoughts come from the perspective of someone who has researched alternative medicine for many years. Pseudoscientists seem to love alternative medicine and proponents of alternative medicine love pseudoscience. As a result, alternative medicine is densely populated by pseudoscientists.
But what is the characteristic of pseudoscience? Reflecting on this question, I found not one but several hallmarks (and for each of them, there are many posts on this blog which provide further explanations):
- A bizarre theory elevated to the status of a dogma
- Conspiracy theories
- The abuse of science (not for testing but) for confirming assumptions.
- Jumping to conclusions
- The torture of data (until they ‘confess’)
- The use of fallacies
- The absence of rigorous investigations into the risks of their treatments
- The disregard of the methodological quality of data supporting their treatments.
- Telling and promoting untruths
- Ad hominem attacks
Based on these 12 hallmarks, one could create a simple score which indicates the likelihood of the presence of pseudoscience. In other words, it might be useful to consider pseudoscience in terms of a sliding scale. Some things in alternative medicine can be just a bit pseudoscientific, others quite a lot, while others again are hopelessly so.
The issue of pseudoscience is by no means just academic; it is very real problem and has many important, practical implications. The most important one probably is that, in health care (and other areas as well), pseudoscience can be harmful, even to the point that it costs lives of vulnerable patients who believe that everything masquerading as science can be relied upon.
Dr. Oz, famous through his TV show promoting all types of quackery, recently testified before a US Senate subcommittee hearing on protecting consumers from false and deceptive advertising of weight loss products. This event turned out to be less than flattering for Dr Oz. One journalist commented that he “might as well be a cowardly lion — sent home with his tail between his legs after being accused at a congressional hearing of lying on his show about weight-loss claims.”
“I don’t get why you need to say this stuff, because you know it’s not true,” said Senator Claire McCaskill, who led the commerce subcommittee hearing. “The scientific community is almost monolithically against you in terms of the efficacy of the products you called ‘miracles,’ ” the Democratic senator from Missouri told Oz. “It’s a major problem when people are spending more and more money and they’re gaining more and more weight,” said Senator Amy Klobuchar.“Either you don’t talk about these things at all, or you’re going to have to be more specific because right now . . . this is not working.”
A source close to Dr Oz said he was perplexed: “We were invited down to Washington to testify at a hearing about scams and instead it became all about how much we hate your show.” Oz himself testified that he “heard the message…I do personally believe in the items that I talk about.”
“I intensively study them. I have given my family these products. . . . If you can lose a pound a week more than you would have lost by using them, it jump-starts you and gets you going. I think it makes sense.” “I’m surprised you’re defending this,” McCaskill replied. “It’s something that gives people false hope. I don’t see why you need to go there.”
Another journalist commented that the Senators repeatedly placed him on the defense over his weight loss products: “I know you know how much power you have. I know you know that. You are very powerful and [with] power comes a great deal of responsibility,” Senator Claire McCaskill , who led the Senate’s consumer protection hearing titled “Protecting Consumers from False and Deceptive Advertising of Weight-Loss Products…You are being made an example of today because of the power you have in this space…We didn’t call this hearing to beat up on you but we did call this hearing to talk about a real crisis in consumer protection. You can either be part of the police here or you can be part of the problem.”
Oz insisted he was no huckster but admitted the products promoted on his show don’t always have “the scientific muster” to present their benefits as “fact…I actually do personally believe in the items that I talk about in the show. I passionately studied them. I recognize that oftentimes they don’t have the scientific muster to present as fact but nevertheless I would give my audience the advice I give my family all the time. And I have given my family these products,” he said.
Dr Oz also said that some alternative treatments, such as prayer, cannot be tested scientifically. “I don’t think this ought to be a referendum on the use of alternative medical therapies. Because if that’s the case, listen, I’ve been criticized for having folks coming on my show talking about the power of prayer,” he said. “I can’t prove that prayer helps people survive an illness.”
No, Dr Oz! I know you are mistaken! I have done the research – both on alternative slimming aids and on spiritual healing. The results quite clearly show that these methods are not more effective than a placebo.
If we search on ‘Medline’ for ‘complementary alternative medicine’ (CAM), we currently get about 13000 hits. A little graph on the side of the page demonstrates that, during the last 4 years, the number of articles on this subject has grown exponentially.
Surely, this must be very good news: such intense research activity will soon tell us exactly which alternative treatments work for which conditions and which don’t.
I beg to differ. Let me explain why.
The same ‘Medline’ search informs us that the majority of the recent articles were published in an open access journal called ‘Evidence-Based Complementary and Alternative Medicine’ (eCAM). For example, of the 80 most recent articles listed in Medline (on 26/5/2014), 53 came from that journal. The publication frequency of eCAM and its increase in recent years beggars belief: in 2011, they published just over 500 articles which is already a high number, but, in 2012, the figure had risen to >800, and in 2013 it was >1300 (the equivalent 2013 figure for the BMJ/BMJ Open by comparison is 4, and that for another alt med journal, e.g. Forsch Komplement, is 10)
How do they do it? How can eCAM be so dominant in publishing alt med research? The trick seems to be fairly simple.
Let’s assume you are an alt med researcher and you have an article that you would like to see published. Once you submit it to eCAM, your paper is sent to one of the ~150 members of the editorial board. These people are almost all strong proponents of alternative medicine; critics are a true rarity in this group. At this stage, you are able to suggest the peer reviewers for your submission (all who ever accepted this task are listed on the website; they amount to several thousand!), and it seems that, with the vast majority of submissions, the authors’ suggestions are being followed.
It goes without saying that most researchers suggest colleagues for peer reviewing who are not going to reject their work (the motto seems to be “if you pass my paper, I will pass yours). Therefore even faily flimsy bits of research pass this peer review process and get quickly published online in eCAM.
This process explains a lot, I think: 1) the extraordinarily high number of articles published 2) why currently more than 50% of all alt med research originate from eCAM 3) why so much of it is utter rubbish.
Even the mere titles of some of the articles might demonstrate my point. A few examples have to suffice:
- Color distribution differences in the tongue in sleep disorder
- Wen-dan decoction improves negative emotions in sleep-deprived rats by regulating orexin-a and leptin expression.
- Yiqi Huoxue Recipe Improves Heart Function through Inhibiting Apoptosis Related to Endoplasmic Reticulum Stress in Myocardial Infarction Model of Rats.
- Protective Effects of Bu-Shen-Huo-Xue Formula against 5/6 Nephrectomy-Induced Chronic Renal Failure in Rats
- Effects and Mechanisms of Complementary and Alternative Medicine during the Reproductive Process
- Evidence-based medicinal plants for modern chronic diseases
- Transforming Pain into Beauty: On Art, Healing, and Care for the Spirit
This system of uncritical peer review and fast online publication seems to suit many of the people involved in this process: the journal’s owners are laughing all the way to the bank; there is a publication charge of US$ 2000 per article, and, in 2013, the income of eCAM must therefore have been well over US$2 000 000. The researchers are equally delighted; they get even their flimsiest papers published (remember: ‘publish or perish’!). And the evangelic believers in alternative medicine are pleased because they can now claim that their field is highly research-active and that there is plenty of evidence to support the use of this or that therapy.
But there are others who are not served well by eCAM habit of publishing irrelevant, low quality articles:
- professionals who would like to advance health care and want to see reliable evidence as to which treatments work and which don’t,
- the public who, in one way or another, pay for all this and might assume that published research tends to be relevant and reliable,
- the patients who have given their time to researchers in the hope that their gift will improve health care,
- ill individuals who hope that alternative treatments might relieve their suffering,
- politicians who rely on research to be reliable in order to arrive at the right decisions.
Come to think of it, the vast majority of people should be less than enchanted with eCAM and similar journals.
Auricular acupuncture (AA), according to the ‘COLLEGE OF AURICULAR ACUPUNCTURE’, has its origins in Modern Europe. In 1957 Dr. Paul Nogier, a neurologist from Lyons in France, observed a locum doctor treating sciatica by cauterizing an area of the ear. This prompted extensive research culminating in the development of the somatopic correspondence of specific parts of the body to the ear based upon the concept of an inverted foetus. Dr. Nogier believed that pain and other symptoms in the body could be alleviated by needling, massaging or electronically stimulating the corresponding region of the ear. Auricular Acupuncture is a specialized complementary therapy where acupuncture points on the outer ear are treated, using either needles or acupunctoscopes (electrical location and stimulation machines) to help relieve many chronic complaints. There are over 200 acupuncture points on the ear, each point named after an area of our anatomy. The outer ear acts like a switchboard to the brain. Each acupuncture point being treated, triggers electrical impulses from the ear via the brain, to the specific part of the body being treated.
Sounds odd? Well, that’s because it is odd!
But just because something is odd does not mean it is ineffective – so, what does the reliable evidence tell us? Here are some conclusions from systematic reviews:
All of these analyses point out that the quality of the studies is usually very poor, and stress that more and better research is required. It is therefore interesting to note that a new study has just been published. Perhaps it could settle the question about the effectiveness of AA?
The aim of this study was 1) to evaluate whether auricular acupuncture effective for reducing health care provider stress and anxiety and 2) to determine, if auricular acupuncture impacts provider capacity for developing caring relationships with patients. Pre-intervention and post-intervention surveys were evaluated to see, if auricular acupuncture was associated with changes in State-Trait Anxiety Inventory (STAI), Professional Quality of Life, and Caring Ability Inventory scores. The results indicate that, compared with baseline, participants had a significant reduction in state anxiety (STAI), trait anxiety (STAI), burnout, and secondary traumatic stress scores (Professional Quality of Life). Significant increases were noted in courage and patience, two dimensions of the Caring Ability Inventory.
From these findings, the authors conclude that auricular acupuncture is an effective intervention for the relief of stress/anxiety in providers and supports heightened capacity for caring.
Sounds odd again? Yes, because it is odd!
I would argue that a study of any controversial therapy that has already been tested repeatedly in poor quality trials must have sufficient scientific rigor to advance the field of inquiry. If it does not fulfil this criterion, it is quite simply not ethical. The new study does not even have a control group; we can therefore not begin to tell whether the observed outcomes were due to non-specific effects, the natural history of the condition or regression towards the mean (to mention but a few of the possible sources of bias). To conclude that AA is ‘an effective intervention’ is therefore utterly barmy.
All of this could be entirely trivial and inconsequential. I am afraid, however, that it is not. Alternative medicine is littered with such unethically flawed research conducted by naïve and clueless pseudo-scientists who arrive at outrageous conclusions. This relentless flow of false-positive findings misleads consumers, health care professionals, decision makers and everyone else to draw the wrong conclusions about bogus therapies. And, in the end, this sort of thing even does a grave disfavour to any branch of alternative medicine that might have some degree of respectability.
IT IS HIGH TIME THAT THIS NONSENSE STOPS! IT BORDERS ON SCIENTIFIC MISCONDUCT.
The question whether infant colic can be effectively treated with manipulative therapies might seem rather trivial – after all, this is a benign condition which the infant quickly grows out of. However, the issue becomes a little more tricky, if we consider that it was one of the 6 paediatric illnesses which were at the centre of the famous libel case of the BCA against my friend and co-author Simon Singh. At the time, Simon had claimed that there was ‘not a jot of evidence’ for claiming that chiropractic was an effective treatment of infant colic, and my systematic review of the evidence strongly supported his statement. The BCA eventually lost their libel case and with it the reputation of chiropractic. Now a new article on this intriguing topic has become available; do we have to reverse our judgements?
The aim of this new systematic review was to evaluate the efficacy or effectiveness of manipulative therapies for infantile colic. Six RCTs of chiropractic, osteopathy or cranial osteopathy alone or in conjunction with other interventions were included with a total of 325 infants. Of the 6 included studies, 5 were “suggestive of a beneficial effect” and one found no evidence of benefit. Combining all the RCTs suggested that manipulative therapies had a significant effect. The average crying time was reduced by an average of 72 minutes per day. This effect was sustained for studies with a low risk of selection bias and attrition bias. When analysing only those studies with a low risk of performance bias (i.e. parental blinding) the improvement in daily crying hours was no longer statistically significant.
The quality of the studies was variable. There was a generally low risk of selection bias but a high risk of performance bias. Only one of the studies recorded adverse events and none were encountered.
From these data, the authors drew the following conclusion: Parents of infants receiving manipulative therapies reported fewer hours crying per day than parents whose infants did not and this difference was statistically significant. Most studies had a high risk of performance bias due to the fact that the assessors (parents) were not blind to who had received the intervention. When combining only those trials with a low risk of such performance bias the results did not reach statistical significance.
Does that mean that chiropractic does work for infant colic? No, it does not!
The first thing to point out is that the new systematic review included not just RCTs of chiropractic but also osteopathy and cranio-sacral therapy.
The second important issue is that the effects disappear, once performance bias is being accounted for which clearly shows that the result is false positive.
The third relevant fact is that the majority of the RCTs were of poor quality. The methodologically best studies were negative.
And the fourth thing to note is that only one study mentioned adverse effects, which means that the other 5 trials were in breach of one of rather elementary research ethics.
What makes all of this even more fascinating is the fact that the senior author of the new publication, George Lewith, is the very expert who advised the BCA in their libel case against Simon Singh. He seems so fond of his work that he even decided to re-publish it using even more misleading language than before. It is, of course, far from me to suggest that his review was an attempt to white-wash the issue of chiropractic ‘bogus’ claims. However, based on the available evidence, I would have formulated conclusions which are more than just a little different from his; something like this perhaps:
The current best evidence suggests that the small effects that emerge when we pool the data from mostly unreliable studies are due to bias and therefore not real. This systematic review therefore fails to show that manipulative therapies are effective. It furthermore points to a serious breach of research ethics by the majority of researchers in this field.
A new book is currently being promoted. It specifically targets cancer patients and misleads them into thinking that alternative therapies offer hope for this vulnerable group of patients. Here is what the press release says:
Endeavoring to provide the 1.2 million Americans diagnosed with cancer annually with alternative treatments co-authors Johanna C. Schipper and Frank J. Vanderlugt announce the launch of “The Natural Cancer Handbook”. The useful book explores how more than fifty alternative treatments work, their price, and where they can be obtained…. Contributing to the war on cancer with a bevy of scientific and anecdotal evidence to support the effectiveness of the treatments the handbook is a respite from the mixed messages patients often endure.
With more than fifty of the most effective alternative cancer treatments listed The Natural Cancer Handbook is the work of two years of research. Used successfully over the last century, the remedies found in the handbook are significantly cheaper than standard cancer treatments and in most cases can be used alongside them.
…The handbook discusses the successful alternative treatments Budwig Diet, Beta 1, 3D Glucan, and the readily available green food supplements such as barley grass, chlorella and spirulina. The Natural Cancer Handbook also explores the benefits of Melatonin, Noni, Resveratrol and the Canadian Resonant Light and the Hulda Clark generators.
…Vanderlugt is a Chartered Accountant with a Bachelor of Science in Biology and Schipper has researched cancer extensively and has five years training in medicine.
Let’s just take the first treatment mentioned above; this is what a reliable source like CANCER RESEARCH UK have to say about it:
The Budwig diet was developed by a German biochemist called Johanna Budwig in the 1950s. It involves eating flaxseed mixed with cottage cheese or milk. Flax is a plant grown in many parts of the world. Pressing its seeds produces linseed oil to use in cooking or as a food supplement. The seeds contain high levels of fibre and many vitamins and minerals. You grind the flaxseed, usually in a coffee grinder. As well as flaxseed and cottage cheese, the Budwig diet is rich in fruit, vegetables and fibre. You also have to avoid sugar, meat, and fats such as butter, margarine and salad oil.
There is no reliable scientific evidence to show that the Budwig diet (or any highly specific diet) helps people with cancer. It is important to make sure that you have a well balanced diet when you are ill, especially if you are undernourished. We know from research that a healthy, well balanced diet can reduce the risk of cancer. You can find information about diet, healthy eating and cancer on our News and Resources website.
This is a polite way of telling us that diets such as this one is not balanced and not what cancer patients need; in fact, such diets are not just ineffective, they can be dangerous to cancer patients.
Texts like the Natural Cancer Handbook tend to make me quite angry. I find it deeply immoral to mislead cancer patients in this way, simply to make a profit. The truth could not be simpler: There is and never will be such a thing as an alternative cancer ‘cure’.
The concept assumes that there exists an effective cure which is being suppressed only because it originates from alternative medicine circles. But this assumption is idiotic. As soon as a treatment shows promise, it will be picked up by the scientific and oncologic communities and researched until its therapeutic value is known. At the end of this process, we might have a new option to treat cancer effectively. Many examples exist where a new drug was developed from a plant; taxol is but one of many examples.
Those who deny these simple facts in order to make a fast buck from the desperation of some of the most vulnerable patients are, in my view, charlatans of the worst kind.
Today, there are several dozens of journals publishing articles on alternative medicine. ‘The Journal of Alternative and Complementary Medicine’ is one of the best known, and it has one of the highest impact factors of them all. The current issue holds a few ‘gems’ which might be worthy of a comment or two. Here I have selected three articles reporting clinical studies, and I reproduce their abstracts (almost) in full (in italics) and add my comments (for clarity in bold). All the articles are available electronically, and I have provided the links for those who want to investigate beyond the abstracts.
STUDY No 1
The first ‘pilot study‘ was aimed to demonstrate the potential of auricular acupuncture (AAT) for insomnia in maintenance haemodialysis (MHD) patients and to prepare for a future randomized controlled trial.
Eligible patients were enrolled into this descriptive pilot study and received AAT designed to manage insomnia for 4 weeks. Questionnaires that used the Pittsburgh sleep quality index (PSQI) were completed at baseline, after a 4-week intervention, and 1 month after completion of treatment. Sleep quality and other clinical characteristics, including sleeping pills taken, were statistically compared between different time points.
A total of 22 patients were selected as eligible participants and completed the treatment and questionnaires. The mean global PSQI score was significantly decreased after AAT intervention (p<0.05). Participants reported improved sleep quality (p<0.01), shorter sleep latency (p<0.05), less sleep disturbance (p<0.01), and less daytime dysfunction (p=0.01). They also exhibited less dependency on sleep medications, indicated by the reduction in weekly estazolam consumption from 6.98±4.44 pills to 4.23±2.66 pills (p<0.01). However, these improvements were not preserved 1 month after treatment.
Conclusions: In this single-center pilot study, complementary AAT for MHD patients with severe insomnia was feasible and well tolerated and showed encouraging results for sleep quality.
In alternative medicine research, it has become far too common (almost generally accepted) to call a flimsy trial a ‘pilot study’. The authors give their game away by stating that, by conducting this trial, they want to ‘demonstrate the potential of AAT’. This is not a legitimate aim of research; science is for TESTING hypotheses, not for PROVING them!
The results of this trial show that patients experienced improvements after receiving AAT which, however, did not last. As there was no placebo control group, the most likely explanation for these outcomes would be that AAT generated a short-lasting placebo effect.
A sample size of 22 is, of course, far to small to allow any conclusions about the safety of the intervention. Despite these obvious facts, the authors seem convinced that AAT is both safe and effective.
STUDY No 2
The aim of the second study was to compare the therapeutic effect of Yamamoto new scalp acupuncture (YNSA), a recently developed microcupuncture system, with traditional acupuncture (TCA) for the prophylaxis and treatment of migraine headache.
In a randomized clinical trial, 80 patients with migraine headache were assigned to receive YNSA or TCA. A pain visual analogue scale (VAS) and migraine therapy assessment questionnaire (MTAQ) were completed before treatment, after 6 and 18 sections of treatment, and 1 month after completion of therapy.
All the recruited patients completed the study. Baseline characteristics were similar between the two groups. Frequency and severity of migraine attacks, nausea, the need for rescue treatment, and work absence rate decreased similarly in both groups. Recovery from headache and ability to continue daily activities 2 hours after medical treatment showed similar improvement in both groups (p>0.05).
Conclusions: Classic acupuncture and YNSA are similarly effective in the prophylaxis and treatment of migraine headache and may be considered as alternatives to pharmacotherapy.
This is what is technically called an ‘equivalence trial’, i.e. a study that compares an experimental treatment (YNSA) to one that is (assumed to be) effective. To demonstrate equivalence, such trials need to have large sample sizes, and this study is woefully underpowered. As it stands, the results show nothing meaningful at all; if anything, they suggest that both interventions were similarly useless.
STUDY No 3
The third study determined whether injection with hypertonic dextrose and morrhuate sodium (prolotherapy) using a pragmatic, clinically determined injection schedule for knee osteoarthritis (KOA) results in improved knee pain, function, and stiffness compared to baseline status.
The participants were 38 adults who had at least 3 months of symptomatic KOA and who were in the control groups of a prior prolotherapy randomized controlled trial (RCT) (Prior-Control), were ineligible for the RCT (Prior-Ineligible), or were eligible but declined the RCT (Prior-Declined).
The injection sessions at occurred at 1, 5, and 9 weeks with as-needed treatment at weeks 13 and 17. Extra-articular injections of 15% dextrose and 5% morrhuate sodium were done at peri-articular tendon and ligament insertions. A single intra-articular injection of 6 mL 25% dextrose was performed through an inferomedial approach.
The primary outcome measure was the validated Western Ontario McMaster University Osteoarthritis Index (WOMAC). The secondary outcome measure was the Knee Pain Scale and postprocedure opioid medication use and participant satisfaction.
The Prior-Declined group reported the most severe baseline WOMAC score (p=0.02). Compared to baseline status, participants in the Prior-Control group reported a score change of 12.4±3.5 points (19.5%, p=0.002). Prior-Decline and Prior-Ineligible groups improved by 19.4±7.0 (42.9%, p=0.05) and 17.8±3.9 (28.4%, p=0.008) points, respectively; 55.6% of Prior-Control, 75% of Prior-Decline, and 50% of Prior-Ineligible participants reported score improvement in excess of the 12-point minimal clinical important difference on the WOMAC measure. Postprocedure opioid medication resulted in rapid diminution of prolotherapy injection pain. Satisfaction was high and there were no adverse events.
Conclusions: Prolotherapy using dextrose and morrhuate sodium injections for participants with mild-to-severe KOA resulted in safe, significant, sustained improvement of WOMAC-based knee pain, function, and stiffness scores compared to baseline status.
This study had nothing that one might call a proper control group: all the three groups mentioned were treated with the experimental treatment. No attempt was made to control for even the most obvious biases: the observed effects could have been due to placebo or any other non-specific effects. The authors conclusions imply a causal relationship between the treatment and the outcome which is wrong. The notion that the experimental treatment is ‘safe’ is based on just 38 patients and therefore not reasonable.
All of this might seem rather trivial, and my comments could be viewed as a deliberate and vicious attempt to discredit one of the most respected journals of alternative medicine. Yet, considering that articles of this nature are more the rule than the exception in alternative medicine, I do think that this flagrant lack of scientific rigour is a relevant issue and has important implications.
As long as research in this area continues to be deeply flawed, as long as reviewers turn a blind eye to (or are not smart enough to detect) even the most obvious mistakes, as long as journal editors accept any rubbish in order to fill their pages, there is a great danger that we are being continuously being mislead about the supposed therapeutic value of alternative therapies.
Many who read this blog will, of course, have the capacity to think critically and might therefore not fall into the trap of accepting the conclusions of fatally flawed research. But many other people, including politicians, journalists and consumers, might not have the necessary appraisal skills and will thus not be able to tell that such studies can serve only one purpose: to popularise bogus treatments and thereby render health care less effective and more dangerous. Enthusiasts of alternative medicine are usually fully convinced that such studies amount to evidence and ram this pseudo-information down the throat of health care decision makers – the effects of such lobbying on public health can be disastrous.
And there is another downside to the publication of such dismal drivel: assuming (as I do) that not all of alternative medicine is completely useless, such embarrassingly poor research will inevitably have detrimental effects on the discipline of alternative medicine. After being exposed to a seemingly endless stream of pseudo-research, critics will eventually give up taking any of it seriously and might claim that none of it is worth the bother. In other words, those who conduct, accept or publish such nonsensical papers are not only endangering medical progress in general, they are also harming the very cause they try so desperately hard to advance.
Guest Post by Jan Willem Nienhuys
The so-called Swiss government report of 2011 on homeopathy was actually an expanded translation of a 2006 book, which in itself was an expanded version of a document submitted to a Swiss committee (PEK) in charge of evaluation of alternative medicine. It has been severely criticised. A summary of criticisms with links can be found on the RationalWiki item to which we may add the Zeno’s Blog. I present here the results of my scrutiny of chapter 10 (1), although I base my report on the original German edition.
This chapter by itself shows a familiar result: the better the investigation, the less evidence in favor of homeopathy it shows. It shows also how homeopaths systematically distort unfavorable results by mispresenting them. Chapter 10 deals with clinical investigations of homeopathy. The authors restrict their attention to an odd assortment of diseases such as acute rhinitis, allergic rhinitis, allergic asthma, sinusitis, adenoid vegetations, pharyngitis, tonsillitis, influenza-like infection and otitis media, together denoted as ‘upper respiratory tract infections/allergic reactions’ or URTI/A for short.
The number of papers reviewed is very small. The authors looked at much more than randomized clinical trials. Apparently their search did not extend further than 2003, but then they might have found over 150 papers, of which about one third double blind randomized trials that compared how well highly diluted homeopathy and placebo cured one of the indicated diseases. They managed to miss 25 papers mentioned in earlier meta-analyses and about four papers that are summarized in Pubmed.
Among the papers they missed is an extremely strong support for the claim ‘homeopathy works for URTI/A’. For example Riverón-Garrote et al. (2) did a placebo controlled double blind randomized clinical trial of homeopathy (apparently individualised) for asthma. Of about 33 verum patients 32 improved, whereas of about 30 placebo patients only 4 improved. The so-called p-value for such a result is less than 10–11. One wonders why this result wasn’t published in Science or Nature, but only in an obscure Spanish language homeopathic journal. Maybe the paper was excluded because it didn’t state that it was about allergic asthma, but note that in about three quarters of all asthma some kind of allergy is implicated.
Of course this pales in comparison to the paper by Friese and Zabalotnyi (3). Again a double blind randomised clinical trial with 72 sinusitis sufferers for both verum and placebo. But here 71 out of 72 verum patients were free of complaints after three weeks, or at least improved, whereas this was the case for only 8 of the placebo patients. Fisher’s Exact Test gives p = 2.47 times 10-29 (one tailed). A remarkable result, because it is well known that over 80% of sinusitis cases cures spontaneously within two weeks. Maybe placebos are dangerous in the hands of homeopaths. Again one wonders why Friese and Zabalotnyi didn’t share the Nobel prize in, say, 2008, and why it is necessary at all to meticulously analyse papers in which homeopathy shows a marginal advantage.
Instead, Maxion-Bergemann et al. include in their survey a paper by Bahemann (4). We quote the summary of the paper from the internet: ‘In homeopathic practice, Kalium bromatum is known as a remedy in the case of paranoid delusions, e. g. if someone suffers from the delusion of being the object of divine revenge, of being damned, or of being pursued. It is also a very important remedy in the case of nocturnal fears in children as well as in the case of convulsions, when they are hereditary, when they occur in childbed, or during teething. The following case demonstrates the successful treatment of a severe mononucleosis after studying the Materia medica.’ Mononucleosis isn’t even mentioned in the list given that specifies URTI/A. Maybe it was included because one of the symptoms of mononucleosis is a sore throat. Apparently the mononucleosis patient was given Kalium Bromatum (Maxion-Bergemann et al. state that it is Kalium Chromatum 200C, presumably Chromatum and Bromatum don’t differ too much to bother) because of something remarkable the patient said during the anamnesis. The reason for giving Kalium bromatum 200C in cases of paranoia might be that an overdose of bromide can induce psychoses. The homeopathic Materia Medica contains quite a few ‘symptoms’ from accidental poisonings reported in old medical literature; potassium bromide was liberally used in the nineteenth century for the calming of seizure and nervous disorders, according to Wikipedia.
More impressive in the list of 13 RCTs of Maxion-Bergemann are two of the largest ‘homeopathic’ trials known, namely of the remedy Oscillococcinum. These trials cannot be taken seriously. The first one, by Ferley et al. (5), has one glaring fault. They started with 478 ‘influenza’-patients (237 verum), tried to make 149 family physicians note down when the patients recovered, and then elected to restrict their attention to the 63 patients (39 verum) that recovered within 48 hours and therefore probably didn’t have flu at all. Coincidentally this was the only possibility out of 14 that gave a ‘significant’ result: correctly computed, p is just below 0.05. (Ferley et al. based their computation on 462 patients with 228 verum and applied a chi-squared test without continuity correction). It is hardly credible that they set this 48-hour criterion in advance, because even if the remedy worked, the risk of having too few subjects to get a significant result would have been considerable. But if one picks out one result among many possibilities, one should correct for multiple outcome. So the Ferley et al. investigation is at most an exploratory result in need of independent confirmation.
This ‘confirmation’ was undertaken soon afterwards, namely in the beginning of 1991, but the results were only published in 1998 and cannot be found on Pubmed (6). In this paper the definitions are somewhat different, but Papp et al. report that of 334 patients (167 verum) a total of 57 (32 verum) were cured in 48 hours. Now 25 versus 32 is not remarkable at all. One doesn’t need any elaborate computation for this. Calculation gives p=0.4. So one might think that the Ferley hypothesis was soundly refuted. But Papp et al. used something they call ‘the Krauth test’, probably some kind of automated post hoc fishing trip to select the best criteria to distinguish the placebo and verum groups. They claim that this ‘test’ gives p=0.0028. They specifically refer to ‘the null hypothesis (the number of patients free of symptoms after 48 hours is equal in both treatment groups)’, so their computation is wrong. The most remarkable thing about Papp et al. is that nobody seems to have to have noticed the large discrepancy between what the numbers say and the claim of the paper.
Another paper with ‘positive’ results is the 1994 study of Reilly et al. (7), number 28 in Maxion-Bergemann et al. The group of Reilly investigated allergic diseases treated by what they called homeopathy. The typical Reilly experiment consists of administering a highly diluted causative agent such as pollen or house dust mite or cat hairs or bird feathers to persons suffering from pollen allergy (seasonal rhinitis) or allergic asthma. However for true homeopathy one uses a substance that has been the subject of a so-called proving, and the remedy is chosen of the totality of all patient ‘symptoms’ – including things like sleeping position and fear of thunderstorms – sufficiently matches the symptoms of the proving. Let me call Reilly’s method ultra-isopathy. Reilly was already discussing this study on a symposium in 1990, but that paper is not clear. It is about 28 asthma patients, and only 24 were analysed. This small number in itself is already reason enough not to consider it. The main analysis was by comparing a subjective measure of wellbeing, the Visual Analog Scale (VAS). Here we find a significant difference (p=0.003) in favor of ultra-isopathy. However, in the small print we see that change in the very important FEV1-value (Forced Expiratory Volume in 1 second) was non-significant (p=0.08) but this refers only to the 18 patients that took such a test before and after the experiment.
Reilly attracted more attention with his first experiment in this vein (8). He started out with 79 patients in both the verum and the placebo group. The treatment was ultradiluted grass pollen for hay fever. The analysis was only about 56 verum and 52 placebo (in a diagram 53 placebo are shown). Such a large dropout (32%) is not good. On basis of the VAS-scores Reilly found p=0.02. VAS is only an ordinal scale and it is not at all clear that one person’s 60 mm means the same as another person’s 60 mm, and also not that two patients with respectively 40 mm and 80 mm together can be considered as equivalent to two other patients with 60 mm each. If we distinguish only better / equal / worse, then the numbers for the verum group were 34 / 9 / 13 and for the placebo group 27 / 5 / 21. One can analyse this in various ways: as a 3 by 2 contingency table (p=0.15), or as a 2 by 2 table, namely by joining the middle group either to the right (p=0.10) or to the left (p=0.34). In this manner the difference is less impressive.
Maxion-Bergemann et al. collected 29 articles. I take the liberty of removing from these everything that is not a double blind RCT that compares how well highly diluted homeopathy and placebo cures an URTI/A disease. We also remove all research with 50 or less patients. The more or less openly fraudulent or at least grossly mistaken Oscillococcinum trials I also leave out. In order of appearance we have then Wiesenauer 1985 (9)  Reilly 1986 (8)  Wiesenauer 1989 (10)  De Lange-de Klerk 1994 (11)  Aabel 2000 (12)  Jacobs 2001 (13)  Friese 2001 (14)  Lewith 2002 (15)  White 2003 (16)  The square brackets refer to the numbering in Maxion-Bergemann et al. A short review of these nine articles follows.
Wiesenauer 1985: one standard remedy for hayfever. Randomised 213 patients, analysed only 164. “no statistical significance was achieved” says the abstract on Pubmed. Reilly 1986: this we have discussed already. Ultra-isopathy for hayfever. Randomised 158 patients, analysed 108. Statistically significant, but barely so. Wiesenauer 1989: four groups, each with their own standard remedy or placebo for sinusitis, 152 patients. “There was no remarkable difference in the therapeutic success among the investigated homeopathic drug combinations nor between the active drugs and placebo”, according to the abstract in Pubmed De Lange-de Klerk 1994: this research was reported more extensively in the lead author’s dissertation (17). Individualised homeopathy for recurrent URTI in children. 175 children were randomised and 170 analysed after following them for a year. 128 different remedies/potencies were prescribed and all together 1042 different prescriptions were handed out. The result was a non-significant difference between homeopathy and placebo. One striking aspect of this investigation is that only after all computations were done, it was revealed which of the two groups was the placebo group and which the verum group. So the author or her thesis advisors deliberately made it impossible to fall for the temptation to start a fishing expedition in the data after the code was completely broken. See also Pubmed. Aabel 2000: ultra-isopathy for birch pollen allergy. Strictly speaking this investigation shouldn’t be in this short list because it was partly prophylactic. From Pubmed: “Surprisingly, the verum treated patients fared worse than the placebo group”. No measure of statistical significance is mentioned. Remarkably this article is preceded by a similar article (18) that Maxion-Bergemann et al. apparently weren’t able to locate. Jacobs 2001: 75 children with otitis media were treated with individualised homeopathy or placebo. Pubmed: “differences were not statistically significant”. It seems that Jacobs has indulged in a fishing trip because she mentions a “significant decrease in symptoms at 24 and 64 h after treatment in favor of homeopathy”. But that is wrong. Significance only can have a meaning if it refers to a single outcome that was planned before any patients were seen. Just picking out two results out of many and stating they are ‘significant’ betrays a fundamental ignorance of research methodology. Friese 2001: this article is also published elsewhere (19), at least the numbers are exactly the same according to Pubmed. 97 children randomized for either individual homeopathic treatment or placebo treatment of adenoid vegetations, 82 analysed. Apparently these 82 comprised 41 placebo and 41 verum, and of these 12 and 9 respectively required an operation in the end. This allegedly corresponds to p=0.64, “These results show no statistical significance.” Incidentally, this is the same Friese as reference 3. Lewith 2002: again ultra-isopathy, now for asthma, 242 patients randomised, 202 completed all clinical assessments. The full article can be accessed via Pubmed and elsewhere. The main conclusion is “Homoeopathic immunotherapy is not effective in the treatment of patients with asthma.” The authors notice that the averages in both groups behave somewhat erratic, and they have no explanation for this. White 2003: individualised homeopathy compared to placebo for 96 children with asthma, who are followed for 12 months. The conclusion is that there is no evidence that this kind of homeopathy is better than placebo. In other words, out of nine investigations only one (Reilly 1986) obtains a barely significant result.
But the interpretation of Maxion-Bergemann et al. is totally different: “If only the placebo-controlled, randomized trials with the highest EBM evidence are considered, 12 of 16 trials show a positive result for the homeopathically treated group (significantly positive 8/16 and trend 4/16).” Even in the more restricted subset of nine discussed above they are overly optimistic. They mark Wiesenauer (1985), De Lange-de Klerk (1994), Jacobs (2001) as showing a ‘trend for homeopathy’ and Lewith (2002) is even marked ‘significant’. The meticulous and high quality research of De Lange (1993, 1994) is judged ‘trend for homeopathy’.
In case of De Lange it seems clear where this judgement comes from. De Lange had several outcomes (number of sick periods, total duration of sick periods, sum of all dayscores etc., and all these showed roughly the same small non-significant difference in favor of homeopathy. This is not really strange, because these outcomes all measure about the same phenomenon. It is not remarkable that there is a small difference between the averages of the two groups that can only be noticed if the children are followed for a full year. There is not even the beginning of a reason that this has anything to do with the treatment. For example the homeopathy group had ‘significantly’ less pets at home. This might serve as an explanation why they as a group were slightly less sick. One might also speculate that this was retroactively caused by the homeopathic treatment. This is not really more improbable than highly diluted stuff (more than 95% D6 and higher) having an effect.
By convention ‘statistically significant’ is the lower limit where weak conclusions such as ‘worth investigating further’ can be justified, and we repeat: only if it refers to a single outcome measure or endpoint chosen before any data collection has started. De Lange chose recurrent URTI because homeopathy was reputed to be most effective for this type of complaints, especially after investigations such as those of Reilly (1986). If following 170 children for a full year cannot show a clear advantage, then that is simply a negative result. In the case of Lewith the ‘significant for homeopathy’ is probably based on partial results such as that in week 3 ‘homeopathy’ fared better in the asthma VAS. One can just as well point to week 16 where the FEV1 of the placebo group seems much better than in the homeopathy group.
Maxion-Bergemann et al. seem to have been singularly inept in collecting papers on homeopathic trials, and for no apparent reason they decided to look also at a large number of case reports and investigations without control group or blinding, even after investigators as early as 1991 have remarked that henceforth only well designed large double blind RCTs were worth considering. If we restrict our attention to the properly blinded controlled investigations, we see the same thing as in other meta-analyses of homeopathy: there is lots of rubbish in favor of homeopathy, but the good trials say plainly and clearly: homeopathy is ineffective, precisely what can be predicted from the fact that there is nothing in it.
Homeopaths nowadays have a lot to say about RCTs and how they prove homeopathy. RCTs are subtle and complicated scientific tools. It is somewhat strange to see how homeopaths resolutely ignore two centuries of basic science but then argue their cause on the basis of complicated statistics.
Homeopathy is an assortment of wildly different practices and theories. We have seen ultra-isopathy, individualised homeopathy and the practice of giving one standardised remedy for one diagnosis without asking too many personal details from the patient. These standard remedies are often branded mixtures of highly diluted ‘classical’ homeopathy, quite contrary to the opinions of homeopathy’s inventor Hahnemann. There are many more variants of homeopathy and the homeopaths themselves cannot agree which are the correct ones.
Moreover, if a treatment or trial doesn’t work out, then a number of additional hypotheses about homeopathy can be invoked, which is what Maxion-Bergemann et al. do. Homeopathic remedies supposedly are counteracted by lots of regular medications and even by strong tasting or smelling food, such as coffee, parsley, garlic and peppermint. Hahnemann even disapproved of reading in bed and long afternoon naps and prolonged suckling of infants (Organon, section 260). Poor performance of homeopathy can be blamed on something called ‘initial aggravation’ or else on lack of experience of the poorly performing homeopath.
But that these factors are relevant at all is unknown, just like there is no proof at all for the similia principle, nor for the hundred thousands or even millions of ‘symptoms’ associated with highly diluted materials in the homeopathic Materia Medica. If homeopaths really want scientists to share homeopathic beliefs, they should not think up lame excuses for ‘failed’ tests, but for starters they might try to present proofs for all or at least some of their ‘symptoms’. They don’t try very hard and in so far it has been tried, it also has failed (20).
I would like to thank Willem Betz for helpful remarks.
I am a retired mathematician with no other interest than a desire to promote science.
1. Stefanie Maxion-Bergemann, Gudrun Bornhöft, Denise Bloch, Christina Vogt-Frank, Marco Righetti, André Thurneysen. (2011) Clinical Studies on the Effectiveness of Homeopathy for URTI/A (Upper Respiratory Tract Infections and Allergic Reactions) in: Homeopathy in Healthcare – Effectiveness, Appropriateness, Safety, Costs. G. Bornhöft and P.F. Mattheiesen (eds.), Berlin etc., Springer 2011, p. 18-157.
2. Riverón-Garrote, M., Fernandez-Argüelles, R.; Morán-Rodríquez, F.; Campistrou-Labaut, J.L. (1998) Ensayo clínico controlado aleatorízado del tratamiento homeopático del asma bronquial, Boletín Mexicano de Homepatía 1998; 31(2):54-61.
3. Friese, K.-H., Zabalotnyi, D.I. (2007) Homöopathie bei akuter Rhinosinusitis, Eine doppelblinde, placebokontrollierte Studie belegt die Wirksamkeit und Verträglichkeit eines homöopathischen Kombinationsarzneimittels, HNO 55(4):271-277.
4. Bahemann A. (2002) Kalium bromatum bei infektiöser Mononukleose. Zeitschrift für Klassische Homöopathie 46:232–233.
5. Ferley J.P., Zmirou D., D’Adhemar D., Balducci F. (1989). A controlled evaluation of a homoeopathic preparation in the treatment of influenza like syndromes. British Journal of Clinical Pharmacology 27:329-335.
6. Papp R., Schuback G., Beck E., Burkard G., Bengel J., Lehrl S., Belon P. (1998). Oscillococcinum in patients with influenza-like syndromes: a placebo-controlled double-blind evaluation. British Homeopathic Journal 87:69-76.
7. Reilly, D.T., Taylor, M.A., Beattie, N.G.M., Campbell, J.H., McSharry C., Aitchison T.C., Carter R., Stevenson R. (1994) Is evidence for homoeopathy reproducible?, Lancet 1994 344:1601-1606.
8. Reilly, D.T., Taylor, M.A., McSharry, C., Aitchison, T. (1986) Is Homoeopathy a Placebo Response?, Controlled Trial of Homoeopathic Potency – With Pollen in Hayfever as Model, Lancet II.2:881-886.
9. Wiesenauer, M., Gaus, W. (1985) Double-blind Trial Comparing the Effectiveness of Galphimia Potentisation D6 (Homoeopathic Preparation), Galphimia Dilution 10-6 and Placebo on Pollinosis, Arzneimittelforschung 35(11):1745-1747.
10. Wiesenauer M, Gaus W, Bohnacker U, Häussler S (1989) Wirksamkeitsprüfung von homöopathischen Kombinationspräparaten bei Sinusitis: Ergebnisse einer randomisierten Doppelblindstudie unter Praxisbedingungen. Arzneimittelforschung 39:620-625.
11. de Lange-de Klerk E.S.M., Blommers J., Kuik D.J., Bezemer P.D., Feenstra L. (1994). Effects of homoeopathic medicines on daily burden of symptoms in children with recurrent upper respiratory tract infections. BMJ 309:1329-1332.
12. Aabel, S. (2000) No beneficial effect of isopathic prophylactic treatment for birch pollen allergy during a low-pollen season, A double-blind, placebo-controlled clinical trial of homeopathic Betula 30c. British Homeopathic Journal 89(4):169-173.
13. Jacobs, J., Springer, D.A., Crothers, D. (2001) Homeopathic treatment of acute otitis media in children, A preliminary randomized placebo-controlled trial. The Pediatric Infectious Disease Journal 20(2):177-183.
14. Friese K.H., Feuchter U., Lüdtke R., Moeller H. (2001) Results of a randomised prospective double-blind trial on the homeopathic treatment of adenoid vegetations. European Journal of General Practice 7:48-54.
15. Lewith, G.T., Watkins, A.D.; Hyland, M.E.; Shaw, S.; Broomfield, J.A.; Dolan, G.; Holgate, S.T. (2002) Use of ultramolecular potencies of allergen to treat asthmatic people allergic to house dust mite: double blind randomised controlled clinical trial, BMJ 324:520-523.
16. White, A., Slade, P.; Hunt, C.; Hart, A.; Ernst, E. (2003) Individualised homeopathy as an adjunct in the treatment of childhood asthma, A randomised placebo controlled trial. Thorax 58(4):317-321
17. Lange-de Klerk, E.S.M. de, Effects of homoeopathic medicines on children with recurrent upper respiratory tract infections. Vrije Universiteit Amsterdam, 1993 (Dissertation).
18. Aabel, S., Laerum, E.; Dölvik, S.; Djupesland, P. (2000) Is homeopathic ‘immunotherapy’ effective?, A double-blind, placebo-controlled trial with the isopathic remedy Betula 30c for patients with birch pollen allergy. British Homeopathic Journal 89(4):161-168.
19. Friese K.-H., Feuchter U., Möller H. (1997). Die homöopathische Behandling von adenoiden Vegetationen. HNO; 45:618–624.
20. Brien S., Lewith G., Bryant, T. (2003) Ultramolecular homeopathy has no observable clinical effects. A randomized, double-blind, placebo-controlled proving trial of Belladonna 30C.
A recent meta-analysis evaluated the efficacy of acupuncture for treatment of irritable bowel syndrome (IBS) and arrived at bizarrely positive conclusions.
The authors state that they searched 4 electronic databases for double-blind, placebo-controlled trials investigating the efficacy of acupuncture in the management of IBS. Studies were screened for inclusion based on randomization, controls, and measurable outcomes reported.
Six RCTs were included in the meta-analysis, and 5 articles were of high quality. The pooled relative risk for clinical improvement with acupuncture was 1.75 (95%CI: 1.24-2.46, P = 0.001). Using two different statistical approaches, the authors confirmed the efficacy of acupuncture for treating IBS and concluded that acupuncture exhibits clinically and statistically significant control of IBS symptoms.
As IBS is a common and often difficult to treat condition, this would be great news! But is it true? We do not need to look far to find the embarrassing mistakes and – dare I say it? – lies on which this result was constructed.
The largest RCT included in this meta-analysis was neither placebo-controlled nor double blind; it was a pragmatic trial with the infamous ‘A+B versus B’ design. Here is the key part of its methods section: 116 patients were offered 10 weekly individualised acupuncture sessions plus usual care, 117 patients continued with usual care alone. Intriguingly, this was the ONLY one of the 6 RCTs with a significantly positive result!
The second largest study (as well as all the other trials) showed that acupuncture was no better than sham treatments. Here is the key quote from this trial: there was no statistically significant difference between acupuncture and sham acupuncture.
So, let me re-write the conclusions of this meta-analysis without spin, lies or hype: These results of this meta-analysis seem to indicate that:
- currently there are several RCTs testing whether acupuncture is an effective therapy for IBS,
- all the RCTs that adequately control for placebo-effects show no effectiveness of acupuncture,
- the only RCT that yields a positive result does not make any attempt to control for placebo-effects,
- this suggests that acupuncture is a placebo,
- it also demonstrates how misleading studies with the infamous ‘A+B versus B’ design can be,
- finally, this meta-analysis seems to be a prime example of scientific misconduct with the aim of creating a positive result out of data which are, in fact, negative.