No, I kid you not!
This abstract was actually published in the leading chiro-journal. The authors include three professors from the Canadian Memorial Chiropractic College, Research, Toronto, Canada. Its title is impressive but made my alarm bells ring a bit:
A Randomized Pragmatic Clinical Trial of Chiropractic Care for Headaches With and Without a Self-Acupressure Pillow.
And the actual texts does not disappoint those looking for of pure pseudo-science:
The purpose of this study was to determine if the addition of a self-acupressure pillow (SAP) to typical chiropractic treatment results in significantly greater improvement in tension-type and cervicogenic headache sufferers.
A pragmatic randomized clinical trial was conducted in a chiropractic college teaching clinic. Thirty-four subjects, including tension-type and cervicogenic headache sufferers, 21 to 60 years of age, male or female, completed the study. Group A (n = 15) received typical chiropractic care only (manual therapy and exercises), and group B (n = 19) received typical chiropractic care with daily home use of the SAP. The intervention period was 4 weeks. The main outcome measure was headache frequency. Satisfaction and relief scores were obtained from subjects in the SAP group. Analysis of variance was used to analyze the intergroup comparisons.
Owing to failure of randomization to produce group equivalence on weekly headache frequency, analysis of covariance was performed showing a trend (P = .07) favoring the chiropractic-only group; however, this was not statistically significant. Group A obtained a 46% reduction of weekly headache frequency (t = 3.1, P = .002; d = 1.22). The number of subjects in group A achieving a reduction in headaches greater than 40% was 71%, while for group B, this was 28%. The mean benefit score (0-3) in group B of the use of the SAP was 1.2 (.86). The mean satisfaction rating of users of the SAP was 10.4 (2.7) out of 15 (63%).
This study suggests that chiropractic care may reduce frequency of headaches in patients with chronic tension-type and cervicogenic headache. The use of a self-acupressure pillow (Dr Zaxx device) may help those with headache and headache pain relief as well as producing moderately high satisfaction with use.
Where to begin?
Perhaps it is best, if I simply concentrated on the bizarre research question: is chiropractic care plus the largely uncontrolled use of an ‘acupressure cushion’ better than chiropractic care alone? To savour the lunacy of it, we need to consider that:
- chiropractic is not plausible;
- chiropractic care is not proven to be effective for headaches;
- acupressure is not plausible;
- acupressure is not proven to be effective;
- a self-administered acupressure cushion is also unproven and even less plausible;
This, I fear, renders the study one of the most nonsensical trials I have seen for a very long time. To make the bonanza in pseudo-science complete, the article is supplemented with a most bizarre conclusion about the effectiveness of chiropractic (which, of cause, cannot be examined in a trial of chiro vs chiro).
All this leads me to fear that:
- the best journal of chiropractic is rubbish;
- a professorship in a chiro school may not mean that the professor has the slightest idea about research methodology;
- chiropractors will try to squeeze a conclusion that is favourable for their trade even out of a dead horse.
Bach flower remedies (BFR) are amazingly popular. They have been the subject of posts on this blog before (see here and here, for instance). They are as dilute as most homeopathic remedies and just as implausible. All the rigorous trials that have tested BFR have so far been squarely negative. Here is a truly surprising new study where BFR was administered externally which would seem to make an effect not more but less likely.
A randomized, placebo-controlled clinical trial was conducted with the aim of evaluating the effectiveness of a cream based on BFR for symptoms of carpal tunnel syndrome. Forty-three patients with mild to moderate carpal tunnel syndrome during their “waiting” time for surgical option were randomized into 3 parallel groups: Placebo (n = 14), blinded BFR (n = 16), and non-blinded BFR (n = 13). These groups were treated during 21 days with topical placebo or a cream based on BFR.
Significant improvements were observed on self-reported symptom severity and pain intensity favorable to BFR groups with large effect sizes. In addition, all signs observed during the clinical exam showed significant improvements among the groups as well as symptoms of pain, night pain, and tingling, also with large effect sizes (φ > 0.5). Finally, there were significant differences between the blinded and non-blinded BFR groups for signs and pain registered in clinical exam but not in self-reports.
The Cuban authors of this study concluded that the proposed BFR cream could be an effective intervention in the management of mild and moderate carpal tunnel syndrome, reducing the severity symptoms and providing pain relief.
This is truly amazing, not least because there is not much that we can offer such patients except for surgery which usually is very successful. The current Cochrane review of non-surgical interventions for carpal tunnel syndrome shows significant short-term benefit from oral steroids, splinting, ultrasound, yoga and carpal bone mobilisation. Other non-surgical treatments do not produce significant benefit. More trials are needed to compare treatments and ascertain the duration of benefit.
What then should we make of the new study?
I have to admit, I am not sure. It was published in one of the worst journals I know which has attracted our attention on this blog before. It was published by authors from Cuba who I know nothing about. More importantly, its findings sound far too good to be true.
If I had been the editor in charge, I would have asked for the original data and had them re-analysed by an independent statistician. As we cannot do that, our only option is to apply common sense and wait for an independent replication before conceding that BFR are effective.
Today the GUARDIAN published an article promoting acupuncture on the NHS. The article is offensively misleading, I think, and therefore deserves a comment. I write these comments with a heavy heart, I should add, because the GUARDIAN is by far my favourite UK daily. In the following, I will cite key passages from the article in question and add my comments in bold.
Every woman needing pain relief while giving birth at University College London hospital (UCLH) is offered acupuncture, with around half of the hospital’s midwives specially trained to give the treatment. UCLH is far from typical in this respect, though: acupuncture is not standard throughout the UK and many health practitioners claim patients are often denied access to it through the NHS because of entrenched scepticism from sections of the medical establishment.
Entrenched scepticism? I would say that it could be perhaps be related to the evidence. The conclusions of the current Cochrane review on acupuncture for labour pain are cautious and do not seem strong enough to issue a general recommendation for general use in childbirth: “acupuncture and acupressure may have a role with reducing pain, increasing satisfaction with pain management and reduced use of pharmacological management. However, there is a need for further research.”
“There are conditions for which acupuncture works and others where it doesn’t. It is not a cure-all, and should be open to scrutiny. But the focus of my work is for acupuncture to become a standard part of midwifery training, and at the same time change perceptions among clinicians about its appropriate use for a whole range of other conditions.”
Open to scrutiny indeed! And if we scrutinise the evidence critically – rather than engaging in uncritical and arguably irresponsible promotion – we find that the evidence is not nearly as convincing as acupuncture fans try to make us believe.
The UK lags behind many other European countries in its support for acupuncture. Just 2,500 medical professionals here are qualified to practice it, compared with 45,000 in Germany. The National Institute for Clinical Excellence (Nice) recommends WMA specifically for the treatment of only two conditions – lower back pain (which costs the NHS £1bn a year) and headaches.
Yes, the UK also lags behind Germany in the use of leeches and other quackery. The ‘ad populum’ fallacy is certainly popular in alternative medicine – but surely, it is still a fallacy!
A growing body of healthcare practitioners believe it should be offered routinely for a variety of conditions, including pain in labour, cancer, musculoskeletal conditions and even irritable bowel syndrome (IBS).
Here we go, belief as a substitute for evidence and fallacies as a replacement of logical arguments. I had thought the GUARDIAN was better than this!
At a time of NHS cuts the use of needles at 8p per unit look attractive. In St Albans, where a group of nurse-led clinics have been using acupuncture since 2008 for patients with knee osteoarthritis, economics have been put under scrutiny. WMA was offered to 114 patients rather than a knee replacement costing £5,000, and 79% accepted. Two years later a third of them had not required a knee transplant, representing an annual saving of £100,000, as estimated by researchers to the St Albans local commissioning group.
This looks a bit like a ‘back of an envelope’ analysis. I would like to see this published in a reputable journal and see it scrutinised by a competent health economist.
So why is acupuncture not being used more widely? The difficulty of proving its efficacy is clearly one of the biggest stumbling blocks. An analysis of 29 studies of almost 18,000 patients found acupuncture effective in treating chronic pain compared with sham acupuncture.
This passage refers to an analysis by Vickers et al. It was severely and repeatedly criticised for being too optimistic and, more importantly, it is not nearly as positive as implied here. Its conclusions are in fact quite cautious: “acupuncture is effective for the treatment of chronic pain and is therefore a reasonable referral option. Significant differences between true and sham acupuncture indicate that acupuncture is more than a placebo. However, these differences are relatively modest, suggesting that factors in addition to the specific effects of needling are important contributors to the therapeutic effects of acupuncture.”
But even treatment proponents question whether a randomised controlled trial – the gold standard of medical research – works, given that faking treatment is nearly impossible.
What do you mean ‘even treatment proponents’? It is only proponents who question these sham needles! The reason: they frequently do not generate the results acupuncture fans had hoped for.
The article is clearly not the GUARDIAN’s finest hour. It lacks even a tinge of critical assessment. This is regrettable, I think, particularly as the truth about acupuncture is not that difficult to transmit to the public:
- Much of the research is of woefully poor quality.
- Its effectiveness is not proven beyond doubt for a single condition.
- Serious adverse effects have been reported.
- Because it requires substantial amounts of therapist time, it also is not cheap.
Wet cupping is a therapy traditionally used in several cultures. It involves superficial injuries to the skin and subsequently the application of a vacuum cup over the injured site. This procedure would draw a small amount of blood into the cup, and this visible effect was taken as a sign that the humors or life forces or whatever are being restored.
The treatment is obviously painful and carries the risk of infection. But does it work? There are not many clinical trials of this form of alternative medicine, and I was therefore thrilled to find a new paper with a randomised clinical trial.
The aim of this clinical trial was to evaluate the effectiveness and safety of wet cupping therapy as the sole treatment for persistent nonspecific low back pain (PNSLBP). The investigators recruited 80 with PNSLBP lasting at least 3 months and randomly allocated them to an intervention group (n=40) or to a control group (n=40). The experimental group had 6 wet cupping sessions within 2 weeks, each of which were done at two bladder meridian (BL) acupuncture points. The control group had no such treatments. Acetaminophen was allowed as a rescue treatment in both groups. The Numeric Rating Scale (NRS), McGill Present Pain Intensity (PPI), and Oswestry Disability Questionnaire (ODQ) were used as outcome measures. Numbers of acetaminophen tablets taken were compared at 4 weeks from baseline. Adverse events were recorded.
At the end of the intervention, statistically significant differences in all three outcome measures favouring the wet cupping group compared with the control group were seen. These improvements continued for another two weeks after the end of the intervention. Acetaminophen was used less in the wet cupping group, but this difference was not statistically significant. No adverse events were reported.
The authors concluded that wet cupping is potentially effective in reducing pain and improving disability associated with PNSLBP at least for 2 weeks after the end of the wet cupping period. Placebo-controlled trials are needed.
Every now and then – well, actually in alternative medicine this is not so rare an event – I come across a study that ‘smells to high heaven’. This one certainly does; to be precise, it has the stench of TOO GOOD TO BE TRUE.
Apart from the numerous weaknesses of the study design, there is the fact that the results are do simply not seem plausible. Low back pain has a natural history that is well-studied. We therefore know that the majority of cases do get better fairly quickly regardless of whether we treat them or not. In this study, the control group did not improve at all, as shown on the impressive graph below (the grey line depicts the symptoms in the control group and the black one those of the cupping group).
To me, the improvement of the experimental group looks much like one might expect from the natural history of back pain. If this were true, the effect of wet cupping would by close to zero and the conclusion drawn by the authors of this trial would be false-positive.
But why was there no improvement in the control group?
I do not know the answer to this question. All I know is that it is this unexplained phenomenon which has created the impression of effectiveness of wet cupping.
Much has been written on this blog and elsewhere about the risks of spinal manipulation. It relates almost exclusively to the risks of manipulating patients’ necks. There is far less on the safety of thrust joint manipulation (TJM) when applied to the thoracic spine. A new paper focusses on this specific topic.
The purpose of this review was to retrospectively analyse documented case reports in the literature describing patients who had experienced severe adverse events (AE) after receiving TJM to their thoracic spine.
Case reports published in peer reviewed journals were searched in Medline (using Ovid Technologies, Inc.), Science Direct, Web of Science, PEDro (Physiotherapy Evidence Database), Index of Chiropractic literature, AMED (Allied and Alternative Medicine Database), PubMed and the Cumulative Index to Nursing and Allied Health (CINHAL) from January 1950 to February 2015.
Case reports were included if they: (1) were peer-reviewed; (2) were published between 1950 and 2015; (3) provided case reports or case series; and (4) had TJM as an intervention. The authors only looked at serious complications, not at the much more frequent transient AEs after spinal manipulations. Articles were excluded if: (1) the AE occurred without TJM (e.g. spontaneous); (2) the article was a systematic or literature review; or (3) it was written in a language other than English or Spanish. Data extracted from each case report included: gender; age; who performed the TJM and why; presence of contraindications; the number of manipulation interventions performed; initial symptoms experienced after the TJM; as well as type of severe AE that resulted.
Ten cases, reported in 7 articles, were reviewed. Cases involved females (8) more than males (2), with mean age being 43.5 years. The most frequent AE reported was injury (mechanical or vascular) to the spinal cord (7/10); pneumothorax and hematothorax (2/10) and CSF leak secondary to dural sleeve injury (1/10) were also reported.
The authors point out that there were only a small number of case reports published in the literature and there may have been discrepancies between what was reported and what actually occurred, since physicians dealing with the effects of the AE, rather than the clinician performing the TJM, published the cases.
The authors concluded that serious AE do occur in the thoracic spine, most commonly, trauma to the spinal cord, followed by pneumothorax. This suggests that excessive peak forces may have been applied to thoracic spine, and it should serve as a cautionary note for clinicians to decrease these peak forces.
These are odd conclusions, in my view, and I think I ought to add a few points:
- As I stated above, the actual rate of experiencing AEs after having chiropractic spinal manipulations is much larger; it is around 50%.
- Most complications on record occur with chiropractors, while other professions are far less frequently implicated.
- The authors’ statement about ‘excessive peak force’ is purely speculative and is therefore not a legitimate conclusion.
- As the authors mention, it is hardly ever the chiropractor who reports a serious complication when it occurs.
- In fact, there is no functioning reporting scheme where the public might inform themselves about such complications.
- Therefore their true rate is anyone’s guess.
- As there is no good evidence that thoracic spinal manipulations are effective for any condition, the risk/benefit balance for this intervention fails to be positive.
- Many consumers believe that a chiropractor will only manipulate in the region where they feel pain; this is not necessarily true – they will manipulate where they believe to diagnose ‘SUBLUXATIONS’, and that can be anywhere.
- Finally, I would not call a review that excludes all languages other than English and Spanish ‘systematic’.
And my conclusion from all this? THORACIC SPINAL MANIPULATIONS CAN CAUSE CONSIDERABLE HARM AND SHOULD BE AVOIDED.
Regular readers of this blog will be aware of the many bogus claims made by chiropractors. One claim, however, namely the one postulating chiropractors can effectively treat low back pain with spinal manipulation, is rarely viewed as being bogus. Chiropractors are usually able to produce evidence that does suggest the claim to be true, and therefore even most critics of chiropractic back off on this particular issue.
But is the claim really true?
A recent trial might provide the answer.
The purpose of this study was to compare the effectiveness of chiropractic spinal manipulative therapy (cSMT) to a sham intervention on pain (Visual Analogue Scale, SF-36 pain subscale), disability (Oswestry Disability Index), and physical function (SF-36 subscale, Timed Up and Go) by performing a randomized placebo-controlled trial at 2 Veteran Affairs Clinics.
Older veterans (≥ 65 years of age) who were naive to chiropractic were recruited. A total of 136 who suffered from chronic low back pain (LBP) were included in the study – with 69 being randomly assigned to cSMT and 67 to the sham intervention. Patients were treated twice per week for 4 weeks. The outcomes were assessed at baseline, 5, and 12 weeks post baseline.
Both groups demonstrated significant decrease in pain and disability at 5 and 12 weeks. At 12 weeks, there was no significant difference in pain and a statistically significant decline in disability scores in the cSMT group when compared to the control group. There were no significant differences in adverse events between the groups.
The authors concluded that cSMT did not result in greater improvement in pain when compared to our sham intervention; however, cSMT did demonstrate a slightly greater improvement in disability at 12 weeks. The fact that patients in both groups showed improvements suggests the presence of a nonspecific therapeutic effect.
Hold on, I hear you say, this does not mean that cSMT is a placebo in the treatment of LBP! There are other studies that yield positive results. Let’s not cherry-pick our evidence!
Absolutely correct! To avoid cherry-picking, lets see what the current Cochrane review tells us about cSMT and chronic LBP. Here is the conclusion of this review based on 26 RCTs: High quality evidence suggests that there is no clinically relevant difference between SMT and other interventions for reducing pain and improving function in patients with chronic low-back pain.
Nonspecific neck pain is extremely common, often disabling, and very costly for us all. If we believe those who earn their money with them, effective treatments for the condition abound. One of these therapies is osteopathy. But does osteopathic manipulation/mobilisation really work?
The objective of a recent review (the link I originally put in here does not work, I will supply a new one as soon as the article becomes available on Medline) was to find out. Specifically, the authors wanted to assess the effectiveness of osteopathic manipulative treatment (OMT) in the management of chronic nonspecific neck pain regarding pain, functional status, and adverse events.
Electronic literature searches unrestricted by language were performed in March 2014. A manual search of reference lists and personal communication with experts identified additional studies. Only randomized clinical trials (RCTs) were included, and studies of specific neck pain or single treatment techniques were excluded. Primary outcomes were pain and functional status, and secondary outcome was adverse events.
Studies were independently reviewed using a standardized data extraction form. Mean difference (MD) or standard mean difference (SMD) with 95% confidence intervals (CIs) and overall effect size were calculated for primary outcomes. GRADE was used to assess quality of the evidence.
Of 299 identified articles, 18 were evaluated and 15 excluded. The three included RCTs had low risk of bias. The results show that moderate-quality evidence suggested OMT had a significant and clinically relevant effect on pain relief (MD: -13.04, 95% CI: -20.64 to -5.44) in chronic nonspecific neck pain, and moderate-quality evidence suggested a non-significant difference in favour of OMT for functional status (SMD: -0.38, 95% CI: -0.88 to -0.11). No serious adverse events were reported.
The authors concluded that, based on the three included studies, the review suggested clinically relevant effects of OMT for reducing pain in patients with chronic nonspecific neck pain. Given the small sample sizes, different comparison groups, and lack of long-term measurements in the few available studies, larger, high-quality randomized controlled trials with robust comparison groups are recommended.
Yet again I am taken aback by several things simultaneously:
- the extreme paucity of RCTs, particularly considering that neck pain is one of the main indication for osteopaths,
- the rather uncritical text by the authors,
- the nonsensical conclusions.
Let me offer my own conclusions which are, I hope, a little more realistic:
GIVEN THE PAUCITY OF THE RCTs AND THEIR SMALL SAMPLE SIZES, IT IS NOT POSSIBLE TO CLAIM THAT OMT FOR NONSPECIFIC NECK PAIN IS AN EVIDENCE-BASED APPROACH
The purpose of this study was to evaluate the impact of early and guideline adherent physical therapy for low back pain on utilization and costs within the Military Health System (MHS).
Patients presenting to a primary care setting with a new complaint of LBP from January 1, 2007 to December 31, 2009 were identified from the MHS Management Analysis and Reporting Tool. Descriptive statistics, utilization, and costs were examined on the basis of timing of referral to physical therapy and adherence to practice guidelines over a 2-year period. Utilization outcomes (advanced imaging, lumbar injections or surgery, and opioid use) were compared using adjusted odds ratios with 99% confidence intervals. Total LBP-related health care costs over the 2-year follow-up were compared using linear regression models.
753,450 eligible patients with a primary care visit for LBP between 18-60 years of age were considered. Physical therapy was utilized by 16.3% (n = 122,723) of patients, with 24.0% (n = 17,175) of those receiving early physical therapy that was adherent to recommendations for active treatment. Early referral to guideline adherent physical therapy was associated with significantly lower utilization for all outcomes and 60% lower total LBP-related costs.
The authors concluded that the potential for cost savings in the MHS from early guideline adherent physical therapy may be substantial. These results also extend the findings from similar studies in civilian settings by demonstrating an association between early guideline adherent care and utilization and costs in a single payer health system. Future research is necessary to examine which patients with LBP benefit early physical therapy and determine strategies for providing early guideline adherent care.
These are certainly interesting data. Because LBP is such a common condition, it costs us all dearly. Measures to reduce this burden in suffering and expense are urgently needed. The question is whether early referral to a physiotherapist is such a measure. The present data show that this is possible but they do not prove it.
I applaud the authors for realising this point and discussing it at length: The results of this study should be examined in light of the following limitations. Given the favorable natural history of LBP, many patients improve regardless of treatment. Those referred to physical therapy early are also more likely to have a shorter duration of pain, thus the potential for selection bias to have influenced these results. We accounted for a number of co-morbidities available in the data set and excluded patients with prior visits for LBP to mitigate against this possibility. However, the retrospective observational design of this study imposes limitations on extending the associations we observed to causation. Although we attempted to exclude patients with a specific spinal pathology, it is possible that a few patients may have been inadvertently included in the data set, in which case advanced imaging may be indicated. Additionally, although our results support that early physical therapy which adheres to practice guidelines may be less resource intense, we cannot conclude without patient-centered clinical outcomes (i.e., pain, function, disability, satisfaction, etc.) that the care was more cost effective. Further, it may be that the standard we used to judge adherence to practice guidelines (CPT codes) was not sufficiently sensitive to determine whether care is consistent with clinical practice guidelines. We also did not account for indirect or out-of-pocket costs for treatments such as complementary care, which is common for LBP. However, it is likely that the observed effects on total costs would have been even larger had these costs been considered.
I was originally alerted to this paper through a tweet claiming that these results demonstrate that chiropractic has an important role in LBP. However, the study does not even imply such a conclusion. It is, of course, true that many chiropractors use physical therapies. But they do not have the same training as physiotherapists and they tend to use spinal manipulations far more frequently. Virtually every LBP-patient consulting a chiropractor would be treated with spinal manipulations. As this approach is neither based on sound evidence nor free of risks, the conclusion, in my view, cannot be to see chiropractors for LBP; it must be to consult a physiotherapist.
A few years ago, I fell ill with shingles. When patients had consulted me for this condition, during the times when I still was a clinician, I always had to stop myself smiling; they complained bitterly but, really, this was far from serious. Now, affected myself, I did not smile a bit: this was incredibly painful!
I promptly saw my GP in Exeter who, to my utter amazement, prescribed paracetamol. She too seemed to think that this was really nothing to bother her with. As I had feared, the paracetamol did absolutely nothing to my pain. After a few sleepless nights, I went back and asked for something a little more effective. She refused, and I decided to change GP.
Meanwhile, we went on a scheduled holiday to France. I had hoped my shingles would come to a natural end, but my pain continued unabated. People could see it on my face; so our kind neighbour asked whether she could help. I explained the situation, and she instantly claimed to have just the right treatment for me: she knew a healer who lived just round the corner and had helped many of her friends when they had suffered from pain.
“A healer?” I asked, “you cannot be serious.” I explained that I had conducted studies and done other research into this particular subject. Without exception, the results had shown that healing is a pure placebo. “I prefer to carry on taking even something as useless as paracetamol!” I insisted.
But she would have none of it. The next time I saw her, she declared triumphantly that she had made an appointment for me, and there was no question: I had to go.
As it happened, the day before she announced this, I had met up with a doctor friend of mine who, seeing I was in agony, gave me a prescription for gabapentin. In fact, I was just on the way to the pharmacist to pick it up. Thus I was in hopeful that my ordeal was coming to an end. In this optimistic mood I thanked my neighbour for her effort and concern and said something non-committal like “we shall see”.
A few days later, we met again. By this time, the gabapentin had done it’s trick: a was more or less pain-free, albeit a little dazed from the powerful medication. When my neighbour saw me, she exclaimed: “I see that that you are much improved. Wonderful! Yesterday’s healing session has worked!!!”
In my daze, I had forgotten all about the healing, and I had, of course, not been to see the healer. She was so delighted with her coup, that I did not have the heart to tell her the truth. I only said “yes much better, merci”
These events happened a few years ago, but even today, my kind and slightly alternative neighbour believes that, despite having been highly sceptical, healing has cured me of my shingles. To my embarrassment, she occasionally mentions my ‘miraculous cure’.
One day, I must tell her the truth… on second thoughts, perhaps not, she might claim it was distant healing!
On this blog, we have discussed the Alexander Technique before; it is an educational method promoted for all sorts of conditions, including neck pain. The very first website I found when googling it stated the following: “Back and neck pain can be caused by poor posture. Alexander Technique lessons help you to understand how to improve your posture throughout your daily activities. Many people, even those with herniated disc or pinched nerve, experience relief after one lesson, often permanent relief after five or ten lessons.”
Sounds too good to be true? Is there any good evidence?
The aim of this study, a randomized controlled trial with 3 parallel groups, was to test the efficacy of the Alexander Technique, local heat and guided imagery on pain and quality of life in patients with chronic non-specific neck pain. A total of 72 patients (65 females, 40.7±7.9 years) with chronic, non-specific neck pain were recruited. They received 5 sessions of the Alexander Technique, while the control groups were treated with local heat application or guided imagery. All interventions were conducted once a week for 45 minutes each.
The primary outcome measure at week 5 was neck pain intensity quantified on a 100-mm visual analogue scale; secondary outcomes included neck disability, quality of life, satisfaction and safety. The results show no group differences for pain intensity for the Alexander Technique compared to local heat. An exploratory analysis revealed the superiority of the Alexander Technique over guided imagery. Significant group differences in favor of the Alexander Technique were also found for physical quality of life. Adverse events were mild and mainly included slightly increased pain and muscle soreness.
The authors concluded that Alexander Technique was not superior to local heat application in treating chronic non-specific neck pain. It cannot be recommended as routine intervention at this time. Further trials are warranted for conclusive judgment.
I am impressed with these conclusions: this is how results should be interpreted. The primary outcome measure failed to yield a significant effect, and therefore such a negative conclusion is the only one that can be justified. Yet such clear words are an extreme rarity in the realm of alternative medicine. Most researchers in this area would, in my experience, have highlighted the little glimpses of the possibility of a positive effect and concluded that this therapeutic approach may be well worth a try.
In my view, this article is a fine example for demonstrating the difference between true scientists (who aim at testing the effectiveness of interventions) and pseudo-scientists (who aim at promoting their pet therapy). I applaud the authors of this paper!