Tui Na is a massage technique that is based on the Taoist principles of TCM. It involves a range of manipulations usually performed by an operator’s finger, hand, elbow, knee, or foot applied to muscle or soft tissue at specific parts of the body. According to one website of TCM-proponents “Tui Na makes use of various hand techniques in combination with acupuncture and other manipulation techniques. To enhance the healing process, the practitioner may recommend the use of Chinese herbs. Many of the techniques used in this massage resemble that of a western massage like gliding, kneading, vibration, tapping, friction, pulling, rolling, pressing and shaking. In Tui Na massage, the muscles and tendons are massaged with the help of hands, and an acupressure technique is applied to directly affect the flow of Qi at different acupressure points of the body, thus facilitating the healing process. It removes the blockages and keeps the energy moving through the meridians as well as the muscles. A typical session of Tui Na massage may vary from thirty minutes to an hour. The session timings may vary depending on the patient’s needs and condition. The best part of the therapy is that it relaxes as well as energizes the person. The main benefit of Tui Na massage is that it focuses on the specific problem, whether it is an acute or a chronic pain associated with the joints, muscles or a skeletal system. This technique is very beneficial in reducing the pain of neck, shoulders, hips, back, arms, highs, legs and ankle disorders. It is a very effective therapy for arthritis, pain, sciatica and muscle spasms. Other benefits of this massage therapy include alleviation of the stress related disorders like insomnia, constipation, headaches and other disorders related to digestive, respiratory and reproductive systems. The greatest advantage of Tui Na is that it focuses on maintaining overall balance with both physical and mental health. Any one who wants to avoid the side effects of drugs or a chemical based treatment can adopt this effective massage technique to alleviate their pain. Tui Na massage therapy is now becoming a more common therapy method due to its focus on specific problems rather than providing a general treatment.”
This clearly begs the question IS IT EFFECTIVE?
This systematic review assessed the evidence of Tui Na for cervical radiculopathy. Seven databases were searched. Randomised controlled trials (RCTs) incorporating Tui Na alone or Tui Na combined with conventional treatment were included. Five studies involving 448 patients were found. The pooled analysis from the 3 trials indicated that Tui Na alone showed a significant lowering immediate effects on pain score with moderate heterogeneity compared to cervical traction. The meta-analysis from 2 trials revealed significant immediate effects of Tui Na plus cervical traction in improving pain score with no heterogeneity compared to cervical traction alone. None of the RCTs mentioned adverse effects. There was very low quality or low quality evidence to support the results.
The authors concluded that “Tui Na alone or Tui Na plus cervical traction may be helpful to cervical radiculopathy patients, but supportive evidence seems generally weak. Future clinical studies with low risk of bias and adequate follow-up design are recommended.”
In my view, this is a misleading conclusion. A correct one would have been: THE CURRENT EVIDENCE IS INSUFFICIENT TO DRAW ANY CONCLUSIONS ABOUT THE EFFECTIVENESS OF TUI NA.
Here are some of the most obvious reasons:
- there are far too few studies for a firm conclusion,
- the included RCTs lack scientific rigour,
- all trials originate from China where reliability seems to be a serious problem,
- traction is not a useful therapy for radiculopathy,
- the primary studies violate research ethics by not reporting adverse effects.
Personally, I am getting very tired of conclusions stating ‘…XY MAY BE EFFECTIVE/HELPFUL/USEFUL/WORTH A TRY…’ It is obvious that the therapy in question MAY be effective, otherwise one would surely not conduct a systematic review. If a review fails to produce good evidence, it is the authors’ ethical, moral and scientific obligation to state this clearly. If they don’t, they simply misuse science for promotion and mislead the public. Strictly speaking, this amounts to scientific misconduct.
Drug and alcohol dependencies are notoriously difficult to treat effectively. Patients and their families are often desperate and willing to try anything. This seems like an ideal ground for acupuncturists who are, in my experience, experts in putting up smokescreens hiding the true value of their treatment.
The best way to determine the value of any intervention is probably conducting a systematic review of the evidence from rigorous clinical trials. Today we are in the fortunate position to have not just one of those articles; but do they really tell us the truth?
This brand-new systematic review investigated the effects of acupuncture on alcohol-related symptoms and behaviors in patients with this disorder. The PubMed database was searched until 23 August 2016, and reference lists from review studies were also reviewed. The inclusion criteria were the following: (1) being published in a peer-reviewed English-language journal, (2) use of randomized controlled trials (RCTs), (3) assessing the effects of acupuncture on psychological variables in individuals with a primary alcohol problem, and (4) reporting statistics that could be converted to effect sizes.
Seventeen studies were identified for a full-text inspection, and seven (243 patients) of these met our inclusion criteria. The outcomes assessed at the last post-treatment point and any available follow-up data were extracted from each of the studies. Five studies treated patients by inserting a needle into several acupoints in each ear. Two studies stimulated body points with or without ear stimulation. Four studies treated control patients with a placebo needle or under a completely different type of intervention, such as relaxation or transdermal stimulation, whereas the remaining studies inserted needles into nonspecific points. The patients were treated for 2 weeks to 3 months, and the treatment duration per session was 15–45 min. The results of the meta-analysis demonstrated that an acupuncture intervention had a stronger effect on reducing alcohol-related symptoms and behaviours than did the control intervention. A beneficial but weak effect of acupuncture treatment was also found in the follow-up data.
The authors concluded that although our analysis showed a significant difference between acupuncture and the control intervention in patients with alcohol use disorder, this meta-analysis is limited by the small number of studies included. Thus, a larger cohort study is required to provide a firm conclusion.
I am used to reading poor research papers, but this one is like a new dimension. Here are just the most obvious flaws:
- by searching just one database, the likelihood of missing studies is huge,
- by excluding non-English papers, the review automatically becomes non-systematic,
- the included studies differed vastly in many respects and can therefore not be pooled.
As it happens, a further meta-analysis has just been published. Here is its abstract:
Acupuncture has been widely used as a treatment for alcohol dependence. An updated and rigorously conducted systematic review is needed to establish the extent and quality of the evidence on the effectiveness of acupuncture as an intervention for reducing alcohol dependence. This review aimed to ascertain the effectiveness of acupuncture for reducing alcohol dependence as assessed by changes in either craving or withdrawal symptoms.
In this systematic review, a search strategy was designed to identify randomised controlled trials (RCTs) published in either the English or Chinese literature, with a priori eligibility criteria. The following English language databases were searched from inception until June 2015: AMED, Cochrane Library, EMBASE, MEDLINE, PsycINFO, and PubMed; and the following Chinese language databases were similarly searched: CNKI, Sino-med, VIP, and WanFang. Methodological quality of identified RCTs was assessed using the Jadad Scale and the Cochrane Risk of Bias tool.
Fifteen RCTs were included in this review, comprising 1378 participants. The majority of the RCTs were rated as having poor methodological rigour. A statistically significant effect was found in the two primary analyses: acupuncture reduced alcohol craving compared with all controls (SMD = −1.24, 95% CI = −1.96 to −0.51); and acupuncture reduced alcohol withdrawal symptoms compared with all controls (SMD = −0.50, 95% CI = −0.83 to −0.17). In secondary analyses: acupuncture reduced craving compared with sham acupuncture (SMD = −1.00, 95% CI = −1.79 to −0.21); acupuncture reduced craving compared with controls in RCTs conducted in Western countries (SMD = −1.15, 95% CI = −2.12 to −0.18); and acupuncture reduced craving compared with controls in RCTs with only male participants (SMD = −1.68, 95% CI = −2.62 to −0.75).
This study showed that acupuncture was potentially effective in reducing alcohol craving and withdrawal symptoms and could be considered as an additional treatment choice and/or referral option within national healthcare systems.
This Meta-analysis is only a little better than the first, I am afraid. What its conclusions do not sufficiently reflect, in my view, is the fact that the quality of the primary studies was mostly very poor – too poor to draw conclusions from (other than ‘acupuncture research is usually lousy’; see figure below). Therefore, I fail to see how the authors could draw the relatively firm and positive conclusions cited above. In my view, they should have stated something like this: DUE TO THE RISK OF BIAS IN MANY TRIALS, THE EFFECTIVENESS OF ACUPUNCTURE REMAINS UNPROVEN.
The authors of the first meta-analysis open the discussion by proudly declaring that “the present study is the first meta-analysis to examine the effect of acupuncture treatment on patients with alcohol use disorder and to provide data on the magnitude of this effect on alcohol-related clinical symptoms and behaviours.” They discretely overlook this meta-analysis from 2009 (and several others which even their rudimentary search would have identified):
Nineteen electronic databases, including English, Korean, Japanese, and Chinese databases, were systematically searched for RCTs of acupuncture for alcohol dependence up to June 2008 with no language restrictions. The methodological qualities of eligible studies were assessed using the criteria described in the Cochrane Handbook.
Eleven studies, which comprised a total of 1,110 individual cases, were systematically reviewed. Only 2 of 11 trials reported satisfactorily all quality criteria. Four trials comparing acupuncture treatment and sham treatments reported data for alcohol craving. Three studies reported that there were no significant differences. Among 4 trials comparing acupuncture and no acupuncture with conventional therapies, 3 reported significant reductions. No differences between acupuncture and sham treatments were found for completion rates (Risk Ratio = 1.07, 95% confidence interval, CI = 0.91 to 1.25) or acupuncture and no acupuncture (Risk Ratio = 1.15, 95% CI = 0.79 to 1.67). Only 3 RCTs reported acupuncture-related adverse events, which were mostly minimal.
The results of the included studies were equivocal, and the poor methodological quality and the limited number of the trials do not allow any conclusion about the efficacy of acupuncture for treatment of alcohol dependence. More research and well-designed, rigorous, and large clinical trials are necessary to address these issues.
One does not need to be an expert in interpreting meta-analyses, I think, to see that this paper is more rigorous than the new ones (which incidentally were published in the very dubious journals). And this is why I trust the conclusions of this last-named meta-analysis more than those of the new one: the efficacy of acupuncture remains unproven. And this means that we should not employ or promote it for routine care.
This meta-analysis was performed “to ascertain the effectiveness of oral aloe vera consumption on the reduction of fasting blood glucose (FBG) and hemoglobin A1c (HbA1c).”
PubMed, CINAHL, Natural Medicines Comprehensive Database, and Natural Standard databases were searched. The searches were limited to clinical trials or observational studies conducted in humans and published in English. Studies of aloe vera’s effect on FBG, HbA1c, homeostasis model assessment-estimated insulin resistance (HOMA-IR), fasting serum insulin, fructosamine, and oral glucose tolerance test (OGTT) in prediabetic and diabetic populations were examined.
Nine studies were included in the FBG parameter (n = 283); 5 of these studies included HbA1c data (n = 89). Aloe vera decreased FBG by 46.6 mg/dL (p < 0.0001) and HbA1c by 1.05% (p = 0.004). Significant reductions of both endpoints were maintained in all subgroup analyses. Additionally, the data suggested that patients with an FBG ≥200 mg/dL may see a greater benefit. A mean FBG reduction of 109.9 mg/dL was observed in this population (p ≤ 0.0001). There was evidence of publication bias with FBG but not with HbA1c.
The authors concluded that the results of this meta-analysis support the use of oral aloe vera for significantly reducing both FBG (46.6 mg/dL) and HbA1c (1.05%) in prediabetic and diabetic patients. However, given the current overall quality and relative scarcity of data, further clinical studies that are more robust and better controlled are warranted to confirm and further explore these findings.
Oh no, the results do not support the use of aloe vera at all!!
Because this ‘meta-analysis’ is of unacceptably poor quality. Here are just some of the flaws that render it totally useless, particularly for issuing advice such as above:
- The authors included uncontrolled observational studies which make no attempt to control for non-specific effects.
- In several studies, the use of concomitant anti-diabetic medications was allowed; therefore it is not possible to establish cause and effect by aloe vera.
- The search strategy was woefully inadequate; for instance non-English publications were not considered.
- There was no assessment of the scientific rigor of the included studies; this totally invalidates the reliably of the conclusions.
- The included studies used preparations of widely different aloe vera preparations, and there is no way of knowing the does of the active ingredients.
Diabetes is a serious condition that affects millions worldwide. If some of these patients are sufficiently gullible to follow the conclusions of this paper, they might be dead within a matter of days. This makes this article one of the most dangerous papers that I have seen in the ‘peer-reviewed’ literature of alternative medicine.
Who publishes such utter and irresponsible rubbish?
You may well ask.
The journal has been discussed on this blog before for the junk that regularly appears in its pages, and so has its editor in chief. The authors (and the reviewers) are not known to me, but one thing is for sure: they don’t know the first thing about conducting a decent systematic review/meta-analysis.
Acupuncture for hot flushes?
I know, to rational thinkers this sounds bizarre – but, actually, there are quite a few studies on the subject. Enough evidence for me to have published not one but four different systematic reviews on the subject.
The first (2009) concluded that “the evidence is not convincing to suggest acupuncture is an effective treatment of hot flash in patients with breast cancer. Further research is required to investigate whether there are specific effects of acupuncture for treating hot flash in patients with breast cancer.”
The second (also 2009) concluded that “sham-controlled RCTs fail to show specific effects of acupuncture for control of menopausal hot flushes. More rigorous research seems warranted.”
The third (again 2009) concluded that “the evidence is not convincing to suggest acupuncture is an effective treatment for hot flush in patients with prostate cancer. Further research is required to investigate whether acupuncture has hot-flush-specific effects.”
The fourth (2013), a Cochrane review, “found insufficient evidence to determine whether acupuncture is effective for controlling menopausal vasomotor symptoms. When we compared acupuncture with sham acupuncture, there was no evidence of a significant difference in their effect on menopausal vasomotor symptoms. When we compared acupuncture with no treatment there appeared to be a benefit from acupuncture, but acupuncture appeared to be less effective than HT. These findings should be treated with great caution as the evidence was low or very low quality and the studies comparing acupuncture versus no treatment or HT were not controlled with sham acupuncture or placebo HT. Data on adverse effects were lacking.”
And now, there is a new systematic review; its aim was to evaluate the effectiveness of acupuncture for treatment of hot flash in women with breast cancer. The searches identified 12 relevant articles for inclusion. The meta-analysis without any subgroup or moderator failed to show favorable effects of acupuncture on reducing the frequency of hot flashes after intervention (n = 680, SMD = − 0.478, 95 % CI −0.397 to 0.241, P = 0.632) but exhibited marked heterogeneity of the results (Q value = 83.200, P = 0.000, I^2 = 83.17, τ^2 = 0.310). The authors concluded that “the meta-analysis used had contradictory results and yielded no convincing evidence to suggest that acupuncture was an effective treatment of hot flash in patients with breast cancer. Multi-central studies including large sample size are required to investigate the efficiency of acupuncture for treating hot flash in patients with breast cancer.”
What follows from all this?
- The collective evidence does NOT seem to suggest that acupuncture is a promising treatment for hot flushes of any aetiology.
- The new paper is unimpressive, in my view. I don’t see the necessity for it, particularly as it fails to include a formal assessment of the methodological quality of the primary studies (contrary to what the authors state in the abstract) and because it merely includes articles published in English (with a therapy like acupuncture, such a strategy seems ridiculous, in my view).
- I predict that future studies will suggest an effect – as long as they are designed such that they are open to bias.
- Rigorous trials are likely to show an effect beyond placebo.
- My own reviews typically state that MORE RESEARCH IS NEEDED. I regret such statements and would today no longer issue them.
Stable angina is a symptom of coronary heart disease which, in turn, is amongst the most frequent causes of death in developed countries. It is an alarm bell to any responsible clinician and requires causal, often life-saving treatments of which we today have several options. The last thing a patient needs in this condition is ACUPUNCTURE, I would say.
Yet acupuncture is precisely the therapy such patients might be tempted to employ.
Because irresponsible or criminally naïve acupuncturists advertise it!
Take this website, for instance; it informs us that a meta-analysis of eight clinical trials conducted between 2000 and 2014 demonstrates the efficacy of acupuncture for the treatment of stable angina. In all eight clinical trials, patients treated with acupuncture experienced a greater rate of angina relief than those in the control group treated with conventional drug therapies (90.1% vs 75.7%)….
I imagine that this sounds very convincing to patients and I fear that many might opt for acupuncture instead of potentially invasive/unpleasant but life-saving intervention. The original meta-analysis to which the above promotion referred to is equally optimistic. Here is its abstract:
Angina pectoris is a common symptom imperiling patients’ life quality. The aim of this study is to evaluate the efficacy and safety of acupuncture for stable angina pectoris. Clinical randomized-controlled trials (RCTs) comparing the efficacy of acupuncture to conventional drugs in patients with stable angina pectoris were searched using the following database of PubMed, Medline, Wanfang and CNKI. Overall odds ratio (ORs) and weighted mean difference (MD) with their 95% confidence intervals (CI) were calculated by using fixed- or random-effect models depending on the heterogeneity of the included trials. Total 8 RCTs, including 640 angina pectoris cases with 372 patients received acupuncture therapy and 268 patients received conventional drugs, were included. Overall, our result showed that acupuncture significantly increased the clinical curative effects in the relief of angina symptoms (OR=2.89, 95% CI=1.87-4.47, P<0.00001) and improved the electrocardiography (OR=1.83, 95% CI=1.23-2.71, P=0.003), indicating that acupuncture therapy was superior to conventional drugs. Although there was no significant difference in overall effective rate relating reduction of nitroglycerin between two groups (OR=2.13, 95% CI=0.90-5.07, P=0.09), a significant reduction on nitroglycerin consumption in acupuncture group was found (MD=-0.44, 95% CI=-0.64, -0.24, P<0.0001). Furthermore, the time to onset of angina relief was longer for acupuncture therapy than for traditional medicines (MD=2.44, 95% CI=1.64-3.24, P<0.00001, min). No adverse effects associated with acupuncture therapy were found. Acupuncture may be an effective therapy for stable angina pectoris. More clinical trials are needed to systematically assess the role of acupuncture in angina pectoris.
In the discussion section of the full paper, the authors explain that their analysis has several weaknesses:
Several limitations were presented in this meta-analysis. Firstly, conventional drugs in control group were different, this may bring some deviation. Secondly, for outcome of the time to onset of angina relief with acupuncture, only one trial included. Thirdly, the result of some outcomes presented in different expression method such as nitroglycerin consumption. Fourthly, acupuncture combined with traditional medicines or other factors may play a role in angina pectoris.
However, this does not deter them to conclude on a positive note:
In conclusion, we found that acupuncture therapy was superior to the conventional drugs in increasing the clinical curative effects of angina relief, improving the electrocardiography, and reducing the nitroglycerin consumption, indicating that acupuncture therapy may be effective and safe for treating stable angina pectoris. However, further clinical trials are needed to systematically and comprehensively evaluate acupuncture therapy in angina pectoris.
So, why do I find this irresponsibly and dangerously misleading?
Here a just a few reasons why this meta-analysis should not be trusted:
- There was no systematic attempt to evaluate the methodological rigor of the primary studies; any meta-analysis MUST include such an assessment, or else it is not worth the paper it was printed on.
- The primary studies all look extremely weak; this means they are likely to be false-positive.
- They often assessed not acupuncture alone but in combination with other treatments; consequently the findings cannot be attributed to acupuncture.
- All the primary studies originate from China; we have seen previously (see here and here) that Chinese acupuncture trials deliver nothing but positive results which means that their results cannot be trusted: they are false-positive.
My conclusion: the authors, editors and reviewers responsible for this article should be ashamed; they committed or allowed scientific misconduct, mislead the public and endangered patients’ lives.
The aim of a new meta-analysis was to estimate the clinical effectiveness and safety of acupuncture for amnestic mild cognitive impairment (AMCI), the transitional stage between the normal memory loss of aging and dementia. Randomised controlled trials (RCTs) of acupuncture versus medical treatment for AMCI were identified using six electronic databases.
Five RCTs involving a total of 568 subjects were included. The methodological quality of the RCTs was generally poor. Participants receiving acupuncture had better outcomes than those receiving nimodipine with greater clinical efficacy rates (odds ratio (OR) 1.78, 95% CI 1.19 to 2.65; p<0.01), mini-mental state examination (MMSE) scores (mean difference (MD) 0.99, 95% CI 0.71 to 1.28; p<0.01), and picture recognition score (MD 2.12, 95% CI 1.48 to 2.75; p<0.01). Acupuncture used in conjunction with nimodipine significantly improved MMSE scores (MD 1.09, 95% CI 0.29 to 1.89; p<0.01) compared to nimodipine alone. Three trials reported adverse events.
The authors concluded that acupuncture appears effective for AMCI when used as an alternative or adjunctive treatment; however, caution must be exercised given the low methodological quality of included trials. Further, more rigorously designed studies are needed.
Meta-analyses like this one are, in my view, perfect examples for the ‘rubbish in, rubbish out’ principle of systematic reviews. This may seem like an unfair statement, so let me justify it by explaining the shortfalls of this specific paper.
The authors try to tell us that their aim was “to estimate the clinical effectiveness and safety of acupuncture…” While it might be possible to estimate the effectiveness of a therapy by pooling the data of a few RCTs, it is never possible to estimate its safety on such a basis. To conduct an assessment of therapeutic safety, one would need sample sizes that go two or three dimensions beyond those of RCTs. Thus safety assessments are best done by evaluating the evidence from all the available evidence, including case-reports, epidemiological investigations and observational studies.
The authors tell us that “two studies did not report whether any adverse events or side effects had occurred in the experimental or control groups.” This is a common and serious flaw of many acupuncture trials, and another important reason why RCTs cannot be used for evaluating the risks of acupuncture. Too many such studies simply don’t mention adverse effects at all. If they are then submitted to systematic reviews, they must generate a false positive picture about the safety of acupuncture. The absence of adverse effects reporting is a serious breach of research ethics. In the realm of acupuncture, it is so common, that many reviewers do not even bother to discuss this violation of medical ethics as a major issue.
The authors conclude that acupuncture is more effective than nimodipine. This sounds impressive – unless you happen to know that nimodipine is not supported by good evidence either. A Cochrane review provided no convincing evidence that nimodipine is a useful treatment for the symptoms of dementia, either unclassified or according to the major subtypes – Alzheimer’s disease, vascular, or mixed Alzheimer’s and vascular dementia.
The authors also conclude that acupuncture used in conjunction with nimodipine is better than nimodipine alone. This too might sound impressive – unless you realise that all the RCTs in question failed to control for the effects of placebo and the added attention given to the patients. This means that the findings reported here are consistent with acupuncture itself being totally devoid of therapeutic effects.
The authors are quite open about the paucity of RCTs and their mostly dismal methodological quality. Yet they arrive at fairly definitive conclusions regarding the therapeutic value of acupuncture. This is, in my view, a serious mistake: on the basis of a few poorly designed and poorly reported RCTs, one should never arrive at even tentatively positive conclusion. Any decent journal would not have published such misleading phraseology, and it is noteworthy that the paper in question appeared in a journal that has a long history of being hopelessly biased in favour of acupuncture.
Any of the above-mentioned flaws could already be fatal, but I have kept the most serious one for last. All the 5 RCTs that were included in the analyses were conducted in China by Chinese researchers and published in Chinese journals. It has been shown repeatedly that such studies hardly ever report anything other than positive results; no matter what conditions is being investigated, acupuncture turns out to be effective in the hands of Chinese trialists. This means that the result of such a study is clear even before the first patient has been recruited. Little wonder then that virtually all reviews of such trials – and there are dozens of then – arrive at conclusions similar to those formulated in the paper before us.
As I already said: rubbish in, rubbish out!
The German Association of Homeopaths (Deutscher Zentralverein Homoeopathischer Aerzte) just issued a press-release explaining that they have recently determined that homeopathy works.
Well, aren’t we relieved!
Otherwise, we would have had to assume they are all quacks.
Their statement is based on what they consider a thorough analysis of the published evidence. As the whole document is about 60 pages long, I will not bother you with all the details. Instead, I will focus on what they say about systematic reviews/meta-analyses in the press-release:
Eine Betrachtung der Meta-Analysen zur Homöopathie zeigt überwiegend statistisch signifikante Ergebnisse gegenüber Placebo, die auf eine spezifische Wirksamkeit potenzierter Arzneien hinweisen. Je nach den verwendeten Selektionskriterien werden hierbei unterschiedliche Studien in die Auswertung eingeschlossen. Diese Befunde werden von den Autoren der jeweiligen Meta-Analysen zum Teil stark relativiert. Die angeführten Vorbehalte entsprechen hierbei nicht immer den üblichen wissenschaftlichen Standards.
Let me translate this for you: An assessment of the meta-analyses of homeopathy shows mostly significant results compared to placebo which indicates a specific effectiveness of potentised remedies. Depending on the selection criteria, various studies are included in the evaluation. These results are relativized by the authors of the respective meta-analyses. The listed caveats do not always reflect the usual scientific standards.
You think my English has deteriorated or my brain gone soft? No, it’s their German! It makes almost no sense at all.
Therefore, I am afraid, we need to briefly go into the hefty document after all. Their chapter on meta-analyses concludes as follows: Insgesamt ergibt sich hinsichtlich der bis dato publizierten maßgeblichen Meta-Analysen zur Homöopathie, dass in vier von fünf Fällen tendenziell eine spezifische Wirksamkeit potenzierter Arzneimittel über Placebo hinaus erkennbar ist. That makes (linguistically) a little more sense: Overall, it emerges that the currently published decisive meta-analyses show, in 4 of 5 cases, that a specific effectiveness of potentised remedies is noticeable.
In other words, it is now proven, homeopathic remedies work beyond placebo!!!
But how can this be?
Did the NHMRC not just do a similar analysis concluding that “the evidence from research in humans does not show that homeopathy is effective for treating the range of health conditions considered… homeopathy should not be used to treat health conditions that are chronic, serious, or could become serious. People who choose homeopathy may put their health at risk if they reject or delay treatments for which there is good evidence for safety and effectiveness. People who are considering whether to use homeopathy should first get advice from a registered health practitioner. Those who use homeopathy should tell their health practitioner and should keep taking any prescribed treatments.
Obviously ‘down under’ they don’t know how to evaluate published data!
Or could it be that the Germans are mistaken? Or are they perhaps joking?
Let’s have a look!
The Germans selected (cherry-picked) 5 meta-analyses which they believed to be ‘decisive’, while the Australian panel of independent experts (funded by government) assessed 57 meta-analyses and systematic reviews (all they found via extensive literature searches).
But the German evaluation was done by homeopaths (and financed by a homeopathic lobby group)! And they understand homeopathy best and would not have a bias or conflict of interest, would they?[FOR A MORE COMPLETE ANALYSIS, SEE HERE (in German)]
Polycystic ovarian syndrome (PCOS) is a common condition characterised by oligo-amenorrhoea, infertility and hirsutism. Conventional treatment of PCOS includes a range of oral pharmacological agents, lifestyle changes and surgical modalities. Some studies have suggested that acupuncture might be helpful but the evidence is often flawed and the results are mixed. What is needed in such a situation is, of course, a systematic review.
The aim of this new Cochrane review was to assess the effectiveness and safety of acupuncture treatment of oligo/anovulatory women with polycystic ovarian syndrome (PCOS). The authors identified relevant studies from databases including the Cochrane Central Register of Controlled Trials (CENTRAL), Ovid MEDLINE, EMBASE, PsycINFO, CNKI and trial registries. The data are current to 19 October 2015.
They included randomised controlled trials (RCTs) that studied the efficacy of acupuncture treatment for oligo/anovulatory women with PCOS. We excluded quasi- or pseudo-RCTs. Primary outcomes were live birth and ovulation (primary outcomes), and secondary outcomes were clinical pregnancy, restoration of menstruation, multiple pregnancy, miscarriage and adverse events. We assessed the quality of the evidence using GRADE methods.
Two review authors independently selected the studies, extracted data and assessed risk of bias. They calculated Mantel-Haenszel odds ratios (ORs) and mean difference (MD) and 95% confidence intervals (CIs).
Five RCTs with 413 women were included. They compared true acupuncture versus sham acupuncture (two RCTs), true acupuncture versus relaxation (one RCT), true acupuncture versus clomiphene (one RCT) and electroacupuncture versus physical exercise (one RCT). Four of the studies were at high risk of bias in at least one domain. No study reported live birth rate. Two studies reported clinical pregnancy and found no evidence of a difference between true acupuncture and sham acupuncture (OR 2.72, 95% CI 0.69 to 10.77, two RCTs, 191 women, very low quality evidence). Three studies reported ovulation. One RCT reported number of women who had three ovulations during three months of treatment but not ovulation rate. One RCT found no evidence of a difference in mean ovulation rate between true and sham acupuncture (MD -0.03, 95% CI -0.14 to 0.08, one RCT, 84 women, very low quality evidence). However, one other RCT reported very low quality evidence to suggest that true acupuncture might be associated with higher ovulation frequency than relaxation (MD 0.35, 95% CI 0.14 to 0.56, one RCT, 28 women). Two studies reported menstrual frequency. One RCT reported true acupuncture reduced days between menstruation more than sham acupuncture (MD 220.35, 95% CI 252.85 to 187.85, 146 women). One RCT reported electroacupuncture increased menstrual frequency more than no intervention (0.37, 95% CI 0.21 to 0.53, 31 women). There was no evidence of a difference between the groups in adverse events. Evidence was very low quality with very wide CIs and very low event rates. Overall evidence was low or very low quality. The main limitations were failure to report important clinical outcomes and very serious imprecision.
The authors concluded that, thus far, only a limited number of RCTs have been reported. At present, there is insufficient evidence to support the use of acupuncture for treatment of ovulation disorders in women with PCOS.
This is, in my view, a rigorous assessment of the evidence leading to a clear conclusion. Foremost, I applaud the authors from the Faculty of Science, University of Technology Sydney for using such clear language. Such clarity seems to be getting a rare event in reviews of alternative medicine. To demonstrated this point, here are the most recent 5 systematic reviews which came up on my screen when I searched today Medline for ‘complementary alternative medicine, systematic review’.
The combination of TGP and LEF in treatment of RA presented the characteristics of notably decreasing the levels of laboratory indexes and higher safety in terms of liver function. However, this conclusion should be further investigated based on a larger sample size.
CHM as an adjunctive therapy is associated with a decreased risk of in-hospital mortality compared with WT in patients with AKI. Further studies with high quality and large sample size are needed to verify our conclusions.
As an important supplementary treatment, TCM may provide benefits in repair of injured spinal cord. With a general consensus that future clinical approaches will be diversified and a combination of multiple strategies, TCM is likely to attract greater attention in SCI treatment.
I think the phenomenon is fairly obvious: authors of such papers are far too often not able or willing to express the bottom line of their work openly. As systematic reviews are supposed to be the ultimate type of evidence, this trend is very worrying, I think. In my view, such conclusions merely display the bias of the authors. If the evidence is not convincingly positive (which it very rarely is), authors have an ethical obligation to clearly say so.
If they don’t do it, journal editors have the duty to correct the error. If neither of these actions happen, funding agencies should make sure that such teams get no further research money until they can demonstrate that they have learnt the lesson.
This may sound a bit drastic but I think such steps would be both necessary and urgent. The problem is now extremely common, and if we do not quickly implement some effective preventative measures, our scientific literature will become contaminated to the point of becoming useless. This surely would be a disaster that affects us all.
There can, of course, be several reasons for the evidence being not positive:
- there can be a paucity of data
- the results might be contradictory
- the trials might be open to bias
- some of the primary data might look suspicious
In all of these cases, the evidence would be not convincingly positive, and it would be wrong and unhelpful not to be frank about it. Beating about the bush, like so many authors nowadays do, is misleading, unhelpful, unethical and borderline fraudulent. Therefore it constitutes a disservice to everyone concerned.
This seems to be the question that occupies the minds of several homeopaths.
So was I!
Let me explain.
In 1997, Linde et al published their now famous meta-analysis of clinical trials of homeopathy which concluded that “The results of our meta-analysis are not compatible with the hypothesis that the clinical effects of homeopathy are completely due to placebo. However, we found insufficient evidence from these studies that homeopathy is clearly efficacious for any single clinical condition. Further research on homeopathy is warranted provided it is rigorous and systematic.”
This paper had several limitations which Linde was only too happy to admit. The authors therefore conducted a re-analysis which, even though published in an excellent journal, is rarely cited by homeopaths. Linde et al stated in their re-analysis of 2000: “there was clear evidence that studies with better methodological quality tended to yield less positive results.” It was this phenomenon that prompted me and my colleague Max Pittler to publish a ‘letter to the editor’ which now – 15 years later – seems the stone of homeopathic contention.
A blog-post by a believer in homeopathy even asks the interesting question: Did Professor Ernst Sell His Soul to Big Pharma? It continues as follows:
Edzard Ernst is an anti-homeopath who spent his career attacking traditional medicine. In 1993 he became Professor of Complementary Medicine at the University of Exeter. He is often described as the first professor of complementary medicine, but the title he assumed should have fooled no-one. His aim was to discredit medical therapies, notably homeopathy, and he then published some 700 papers in ‘scientific’ journals to do so.
Now, Professor Robert Hahn, in his blog, has made an assessment of the quality of his work… In the interests of the honesty and integrity in science, it is an important assessment. It shows, in his view, how science has been taken over by ideology (or as I would suggest, more accurately, the financial interests of Big Corporations, in this case, Big Pharma). The blog indicates that in order to demonstrate that homeopathy is ineffective, over 95% of scientific research into homeopathy has to be discarded or removed!
So for those people who, like myself, cannot read the original German, here is an English translation of the blog…
“I have never seen a science writer so blatantly biased as Edzard Ernst: his work should not be considered of any worth at all, and discarded” finds Sweden’s Professor Robert Hahn, a leading medical scientist, physician, and Professor of Anaesthesia and Intensive Care at the University of Linköping, Sweden.
Hahn determined therefore to analyze for himself the ‘research’ which supposedly demonstrated homeopathy to be ineffective, and reached the shocking conclusion that:
“only by discarding 98% of homeopathy trials and carrying out a statistical meta-analysis on the remaining 2% negative studies, can one ‘prove’ that homeopathy is ineffective”.
In other words, all supposedly negative homeopathic meta-analyses which opponents of homeopathy have relied on, are scientifically bogus…
Who can you trust? We can begin by disregarding Edzard Ernst. I have read several other studies that he has published, and they are all untrustworthy. His work should be discarded…
In the case of homeopathy, one should stick with what the evidence reveals. And the evidence is that only by removing 95-98% of all studies is the effectiveness of homeopathy not demonstrable…
So, now you are wondering, I am sure: HOW MUCH DID HE GET FOR SELLING HIS SOUL TO BIG PHARMA?
No? You are wondering 1) who this brilliant Swedish scientist, Prof Hahn, is and 2) what article of mine he is criticising? Alright, I will try to enlighten you.
Here I can rely on a comment posted on my blog some time ago by someone who can read Swedish (thank you Bjorn). He commented about Hahn as follows:
A renowned director of medical research with well over 300 publications on anesthesia and intensive care and 16 graduated PhD students under his mentorship, who has been leading a life on the side, blogging and writing about spiritualism, and alternative medicine and now ventures on a public crusade for resurrecting the failing realm of homeopathy!?! Unbelievable!
I was unaware of this person before, even if I have lived and worked in Sweden for decades.
I have spent the evening looking up his net-track and at his blog at roberthahn.nu (in Swedish).
I will try to summarise some first impressions:
Hahn is evidently deeply religious and there is the usual, unmistakably narcissistic aura over his writings and sayings. He is religiously confident that there is more to this world than what can be measured and sensed. In effect, he seems to believe that homeopathy (as well as alternative medical methods in general) must work because there are people who say they have experienced it and denying the possibility is akin to heresy (not his wording but the essence of his writing).
He has, along with his wife, authored at least three books on spiritual matters with titles such as (my translations) “Clear replies from the spiritual world” and “Connections of souls”.
He has a serious issue with skeptics and goes on at length about how they are dishonest bluffers[sic] who willfully cherry-pick and misinterpret evidence to fit their preconceived beliefs.
He feels that desperate patients should generally be allowed the chance that alternative methods may offer.
He believes firmly in former-life memories, including his own, which he claims he has found verification for in an ancient Italian parchment.
His main arguments for homeopathy are Claus Linde’s meta analyses and the sheer number of homeopathic research that he firmly believes shows it being superior to placebo, a fact that (in his opinion) shows it has a biological effect. Shang’s work from 2005 he dismisses as seriously flawed.
He also points to individual research like this as credible proof of the biologic effect of remedies.
He somewhat surprisingly denies recommending homeopathy despite being convinced of its effect and maintains that he wants better, more problem oriented and disease specific studies to clarify its applicability. (my interpretation)
If it weren’t for his track record of genuine, acknowledged medical research and him being a renowned authority in a genuine, scientific medical field, this man would be an ordinary, religiously devout quack.
What strikes me as perhaps telling of a consequence of his “exoscientific” activity, is that Hahn, who holds the position of research director at a large city trauma and emergency hospital is an “adjungerad professor”, which is (usually) a part time, time limited, externally financed professorial position, while any Swedish medical doctor with his very extensive formal merits would very likely hold a full professorship at an academic institution.
END OF QUOTE
MY 2000 PAPER THAT SEEMS TO IRRITATE HAHN
This was a short ‘letter to the editor’ by Ernst and Pittler published in the J Clin Epidemiol commenting on the above-mentioned re-analysis by Linde et al which was published in the same journal. As its text is not available on-line, I re-type parts of it here:
In an interesting re-analysis of their meta-analysis of clinical trials of homeopathy, Linde et al conclude that there is no linear relationship between quality scores and study outcome. We have simply re-plotted their data and arrive at a different conclusion. There is an almost perfect correlation between the odds ratio and the Jadad score between the range of 1-4… [some technical explanations follow which I omit]…Linde et al can be seen as the ultimate epidemiological proof that homeopathy is, in fact, a placebo.
And that is, as far as I can see, the whole mysterious story. I cannot even draw a conclusion – all I can do is to ask a question:
DOES ANYONE UNDERSTAND WHAT THEY ARE GOING ON ABOUT?
Being constantly on the look-out for new, good quality articles on alternative therapy which suggest that a treatment might actually work, I was excited to find not just one or two but four recent publications on an old favourite of mine: massage therapy.
The first paper described a study aimed to investigate the effect of whole body massage on the vital signs, Glasgow Coma Scale (GCS) scores and arterial blood gases (ABG) in trauma ICU patients.
In a randomized, double-blind trial, 108 trauma ICU patients received whole body massage or routine care only. The patients vital signs; systolic blood pressure (SBP), diastolic blood pressure (DBP), respiratory rate (RR), pulse rate (PR), Temperature (T), GCS score and ABG parameters were measured in both groups before the intervention and 1 hour and 3 hours after the intervention. The patient in experimental group received full body massage in 45 minute by a family member.
Significant differences were observed between experimental and control groups in SBP 1 hour and 3 hours after intervention, DBP, RR and PR 1 hour after intervention, and GCS 1 hour and 3 hours after intervention. Significant differences were also observed between experimental and control groups in O2 saturation, PH and pO2. No significant differences between experimental and control groups were noted in Temperature, pCO2 and HCO3.
The authors concluded that massage therapy is a safe and effective treatment in intensive care units to reduce patient’s physical and psychological problems. Therefore the use of massage therapy is recommended to clinical practice as a routine method.
The second paper reported a clinical trial on 66 male and female nurses working in intensive care units of Isfahan University of Medical Sciences, Iran.
Patients were randomly divided into experimental and control groups. The Occupational Stress Inventory (OSI) (Osipow and Spokane, 1987) was completed by participants of the two groups before, immediately after, and 2 weeks after the intervention. Swedish massage was performed on participants of the experimental group for 25 min in each session, twice a week for 4 weeks.
Results showed a significant difference in favour of the massage therapy in overall mean occupation stress scores between experimental and control groups two weeks after the intervention.
The authors concluded that it is recommended that massage, as a valuable noninvasive method, be used for nurses in intensive care units to reduce their stress, promote mental health, and prevent the decrease in quality of nursing work life.
The third paper described a randomized controlled trial evaluating the effects of post-operative massage in patients undergoing abdominal colorectal surgery.
One hundred twenty-seven patients were randomized to receive a 20-min massage or social visit and relaxation session on postoperative days 2 and 3. Vital signs and psychological well-being (pain, tension, anxiety, satisfaction with care, relaxation) were assessed before and after each intervention.
Post-operative massage significantly improved the patients’ perception of pain, tension, and anxiety, but overall satisfaction was unchanged.
The authors concluded that massage may be beneficial during postoperative recovery for patients undergoing abdominal colorectal surgery. Further studies are warranted to optimize timing and duration and to determine other benefits in this clinical setting.
The fourth paper reported a systematic review was to evaluate the effectiveness of massage on the short- and long-term outcomes of pre-term infants.
Literature searches were conducted using the PRISMA framework. Validity of included studies was assessed using criteria defined by the Cochrane Collaboration. Assessments were carried out independently by two reviewers with a third reviewer to resolve differences.
Thirty-four studies met the inclusion criteria, 3 were quasi-experimental, 1 was a pilot study, and the remaining 30 were RCTs. The outcomes that could be used in the meta-analysis and found in more than three studies suggested that massage improved daily weight gain by 0.53 g, and resulted in a significant improvement in mental scores by 7.89 points. There were no significant effects on length of hospital stay, caloric intake, or weight at discharge. Other outcomes were not analyzed either because the units of measurement varied between studies, or because means and standard deviations were not provided by the authors. The quality of the studies was variable with methods of randomization and blinding of assessment unclear in 18 of the 34 trials.
The authors concluded that massage therapy could be a comforting measure for infants in the NICU to improve weight gain and enhance mental development. However, the high heterogeneity, the weak quality in some studies, and the lack of a scientific association between massage and developmental outcomes preclude making definite recommendations and highlight the need for further RCTs to contribute to the existing body of knowledge.
I am not saying that these articles are flawless, nor that I agree with all of their conclusion. What I am trying to indicate is that we finally have here an alternative therapy that is promising.
When I worked in Germany and later in Austria, massage was considered to be entirely mainstream. It was only after I had moved to the UK when I realised that, in English-speaking countries, it is mostly considered to be alternative. Perhaps this classification is wrong?
Perhaps we should differentiate according to what type of massage we are talking about. In the realm of alternative medicine – and not just there, I suppose – this seems good advice indeed.
The above papers are about classical massage therapy, but there are some types pf massage which are less than conventional: aura-massage, Marma massage, Indian head massage, shiatsu etc. etc. the list seems endless. These are alternative in more than one sense, and they have one thing in common: there is, as far as I can see, no good evidence to show that they do anything to human health.
My conclusion therefore is that, even with something as common as massage therapy, we need to be careful not to be roped in by the charlatans.