This press-release caught my attention:
Following the publication in Australia earlier this year of a video showing a chiropractor treating a baby, the Health Minster for the state of Victoria called for the prohibition of chiropractic spinal manipulation for children under the age of 12 years. As a result, an independent panel has been appointed by Safer Care Victoria to examine the evidence and provide recommendations for the chiropractic care of children.
The role of the panel is to (a) examine and assess the available evidence, including information from consumers, providers, and other stakeholders, for the use of spinal manipulation by chiropractors on children less than 12 years of age and (b) provide recommendations regarding this practice to the Victorian Minister for Health.
Members of the public and key stakeholders, including the WFC’s member for Australia, the Australia Chiropractors Association (AusCA), were invited to submit observations. The AusCA’s submission can be read here…
This submission turns out to be lengthy and full of irrelevant platitudes, repetitions and nonsense. In fact, it is hard to find in it any definitive statements at all. Here are two sections (both in bold print) which I found noteworthy:
1. There is no need to restrict parental or patient choice for chiropractic care for children under 12 years of age as there is no evidence of harm. There is however, expressed outcome of benefit by parents70 who actively choose chiropractic care for their children …
No evidence of harm? Really! This is an outright lie. Firstly, one has to stress that there is no monitoring system and that therefore we simply do not learn about adverse effects. Secondly, there is no reason to assume that the adverse effects that have been reported in adults are not also relevant for children. Thirdly, adverse effects in children have been reported; see for instance here. Fourthly, we need to be aware of the fact that any ineffective therapy causes harm by preventing effective therapies from being applied. And fifthly, we need to remember that some chiropractors harm children by advising their parents against vaccination.
2. Three recent systematic reviews have focused on the effectiveness of manual therapy for paediatric conditions. For example, Lanaro et al. assessed osteopathic manipulative treatment for use on preterm infants. This systematic review looked at five clinical trials and found a reduction of length of stay and costs in a large population of preterm infants with no adverse events (96).
Carnes et al.’s 2018 systematic review focused on unsettled, distressed and excessively crying infants following any type of manual therapy. Of the seven clinical trials included, five involved chiropractic manipulative therapy; however, meta-analyses of outcomes were not possible due to the heterogeneity of the clinical trials. The review also analysed an additional 12 observational studies: seven case series, three cohort studies, one service evaluation survey, and one qualitative study. Overall, the systematic review concluded that small benefits were found. Additionally, the reporting of adverse events was low. Interestingly, when a relative risk analysis was done, those who had manual therapy were found to have an 88% reduced risk of having an adverse event compared to those who did not have manual therapy (97).
A third systematic review by Parnell Prevost et al. in 2019 evaluated the effectiveness of any paediatric condition following manual therapy of any type and summarizes the findings of studies of children 18 years of age or younger, as well as all adverse event information. While mostly inconclusive data were found due to lack of high-quality studies, of the 32 clinical trials and 18 observational studies included, favourable outcomes were found for all age groups, including improvements in suboptimal breastfeeding and musculoskeletal conditions. Adverse events were mentioned in only 24 of the included studies with no serious adverse events reported in them (98).
(96) Lanaro D, Ruffini N, Manzotti A, Lista G. Osteopathic manipulative treatment showed reduction of length of stay and costs in preterm infants: A systematic review and meta-analysis. Medicine (Baltimore). 2017; 96(12):e6408 10.1097/MD.0000000000006408.
(97) Carnes D, Plunkett A, Ellwood J, Miles C. Manual therapy for unsettled, distressed and excessively crying infants: a systematic review and meta-analyses. BMJ Open 2018;8:e019040. doi:10.1136/bmjopen-2017-019040.
(98) Parnell Prevost et al. 2019.
And here are my comments:
(96) Lanaro et al is about osteopathy, not chiropractic (4 of the 5 primary trials were by the same research group).
(97) The review by Carnes et al has been discussed previously on this blog. This is what I wrote about it at the time:
The authors concluded that some small benefits were found, but whether these are meaningful to parents remains unclear as does the mechanisms of action. Manual therapy appears relatively safe.
For several reasons, I find this review, although technically sound, quite odd.
Why review uncontrolled data when RCTs are available?
How can a qualitative study be rated as high quality for assessing the effectiveness of a therapy?
How can the authors categorically conclude that there were benefits when there were only 4 RCTs of high quality?
Why do they not explain the implications of none of the RCTs being placebo-controlled?
How can anyone pool the results of all types of manual therapies which, as most of us know, are highly diverse?
How can the authors conclude about the safety of manual therapies when most trials failed to report on this issue?
Why do they not point out that this is unethical?
My greatest general concern about this review is the overt lack of critical input. A systematic review is not a means of promoting an intervention but of critically assessing its value. This void of critical thinking is palpable throughout the paper. In the discussion section, for instance, the authors state that “previous systematic reviews from 2012 and 2014 concluded there was favourable but inconclusive and weak evidence for manual therapy for infantile colic. They mention two reviews to back up this claim. They conveniently forget my own review of 2009 (the first on this subject). Why? Perhaps because it did not fit their preconceived ideas? Here is my abstract:
Some chiropractors claim that spinal manipulation is an effective treatment for infant colic. This systematic review was aimed at evaluating the evidence for this claim. Four databases were searched and three randomised clinical trials met all the inclusion criteria. The totality of this evidence fails to demonstrate the effectiveness of this treatment. It is concluded that the above claim is not based on convincing data from rigorous clinical trials.
Towards the end of their paper, the authors state that “this was a comprehensive and rigorously conducted review…” I beg to differ; it turned out to be uncritical and biased, in my view. And at the very end of the article, we learn a possible reason for this phenomenon: “CM had financial support from the National Council for Osteopathic Research from crowd-funded donations.”
(98) Parnell et al was easy to find despite the incomplete reference in the submission. This paper has also been discussed previously. Here is my post on it:
This systematic review is an attempt [at] … evaluating the use of manual therapy for clinical conditions in the paediatric population, assessing the methodological quality of the studies found, and synthesizing findings based on health condition.
Of the 3563 articles identified through various literature searches, 165 full articles were screened, and 50 studies (32 RCTs and 18 observational studies) met the inclusion criteria. Only 18 studies were judged to be of high quality. Conditions evaluated were:
- attention deficit hyperactivity disorder (ADHD),
- cerebral palsy,
- cranial asymmetry,
- cuboid syndrome,
- infantile colic,
- low back pain,
- obstructive apnoea,
- otitis media,
- paediatric dysfunctional voiding,
- paediatric nocturnal enuresis,
- postural asymmetry,
- preterm infants,
- pulled elbow,
- suboptimal infant breastfeeding,
- suboptimal infant breastfeeding,
- temporomandibular dysfunction,
- upper cervical dysfunction.
Musculoskeletal conditions, including low back pain and headache, were evaluated in seven studies. Only 20 studies reported adverse events.
The authors concluded that fifty studies investigated the clinical effects of manual therapies for a wide variety of pediatric conditions. Moderate-positive overall assessment was found for 3 conditions: low back pain, pulled elbow, and premature infants. Inconclusive unfavorable outcomes were found for 2 conditions: scoliosis (OMT) and torticollis (MT). All other condition’s overall assessments were either inconclusive favorable or unclear. Adverse events were uncommonly reported. More robust clinical trials in this area of healthcare are needed.
There are many things that I find remarkable about this review:
- The list of indications for which studies have been published confirms the notion that manual therapists – especially chiropractors – regard their approach as a panacea.
- A systematic review evaluating the effectiveness of a therapy that includes observational studies without a control group is, in my view, highly suspect.
- Many of the RCTs included in the review are meaningless; for instance, if a trial compares the effectiveness of two different manual therapies none of which has been shown to work, it cannot generate a meaningful result.
- Again, we find that the majority of trialists fail to report adverse effects. This is unethical to a degree that I lose faith in such studies altogether.
- Only three conditions are, according to the authors, based on evidence. This is hardly enough to sustain an entire speciality of paediatric chiropractors.
Allow me to have a closer look at these three conditions.
- Low back pain: the verdict ‘moderate positive’ is based on two RCTs and two observational studies. The latter are irrelevant for evaluating the effectiveness of a therapy. One of the two RCTs should have been excluded because the age of the patients exceeded the age range named by the authors as an inclusion criterion. This leaves us with one single ‘medium quality’ RCT that included a mere 35 patients. In my view, it would be foolish to base a positive verdict on such evidence.
- Pulled elbow: here the verdict is based on one RCT that compared two different approaches of unknown value. In my view, it would be foolish to base a positive verdict on such evidence.
- Preterm: Here we have 4 RCTs; one was a mere pilot study of craniosacral therapy following the infamous A+B vs B design. The other three RCTs were all from the same Italian research group; their findings have never been independently replicated. In my view, it would be foolish to base a positive verdict on such evidence.
So, what can be concluded from this?
I would say that there is no good evidence for chiropractic, osteopathic or other manual treatments for children suffering from any condition.
The ACA’s submission ends with the following conclusion:
The Australian Chiropractors Association (ACA) intent is to improve the general health of all Australians and the ACA supports the following attributes to achieve this:
- The highest standards of ethics and conduct in all areas of research, education and practise
- Chiropractors as the leaders in high quality spinal health and wellbeing
- A commitment to evidence-based practice – the integration of best available research evidence, clinical expertise and patient values
- The profound significance and value of patient-centred chiropractic care in healthcare in Australia.
- Inclusiveness and collaborative relationships within and outside the chiropractic profession…
After reading through the entire, tedious document, I arrived at the conclusion that
THIS SUBMISSION CAN ONLY BE A CALL FOR THE PROHIBITION OF CHIROPRACTIC SPINAL MANIPULATION FOR CHILDREN.
A team from Israel conducted a pragmatic trial to evaluate the impact of So-called Alternative Medicine (SCAM) treatments on postoperative symptoms. Patients ≥ 18 years referred to SCAM treatments by surgical medical staff were allocated to standard of care with SCAM treatment (SCAM group) or without SCAM. Referral criteria were patient preference and practitioner availability. SCAM treatments included Acupuncture, Reflexology, or Guided Imagery. The primary outcome variable was the change from baseline in symptom severity, measured by Visual Analogue Scale (VAS).
A total of 1127 patients were enrolled, 916 undergoing 1214 SCAM treatments and 211 controls. Socio-demographic characteristics were similar in both groups. Patients in the SCAM group had more severe baseline symptoms. Symptom reduction was greater in the SCAM group compared with controls. No significant adverse events were reported with any of the CAM therapies.
The authors concluded that SCAM treatments provide additional relief to Standard Of Care (SOC) for perioperative symptoms. Larger randomized control trial studies with longer follow-ups are needed to confirm these benefits.
Imagine a situation where postoperative patients are being asked “do you want merely our standard care or do you prefer having a lot of extra care, fuss and attention? Few would opt for the former – perhaps just 211 out of a total of 1127, as in the trial above. Now imagine being one of those patients receiving a lot of extra care and attention; would you not feel better, and would your symptoms not improve faster?
I am sure you have long guessed where I am heading. The infamous A+B versus B design has been discussed often enough on this blog. Researchers using it can be certain that they will generate a positive result for their beloved SCAM – even if the SCAM itself is utterly ineffective. The extra care and attention plus the raised expectation will do the trick. If the researchers want to make extra sure that their bogus treatments come out of this study smelling of roses, they can – like our Israeli investigators – omit to randomise patients to the two groups and let them chose according to their preference.
To cut a long story short: this study had zero chance to yield a negative result.
- As such it was not a test but a promotion of SCAM.
- As such it was not science but pseudo science.
- As such it was not ethical but unethical.
WHEN WILL WE FINALLY STOP PUBLISHING SUCH MISLEADING NONSENSE?
Tian Jiu (TJ) therapy is a so-called alternative medicine (SCAM) that has been widely utilized in the management of allergic rhinitis (AR). TJ is also known as “drug moxibustion” or “vesiculating moxibustion.” Herbal patches are applied on the selected acupoints or the diseased body part. In TCM, this treatment is said to regulate the functions of meridians and zang-fu organs, warm the channels, disperse coldness, invigorate qi movement, harmonize nutrient absorption and defence mechanisms, and resolve stagnation in the body and stasis of the blood.
But does it work? This single-blinded, three-arm, randomized controlled study evaluated the efficacy of TJ therapy in AR. A total of 138 AR patients were enrolled. The TJ group and placebo group both received 4-weeks of treatment with either TJ or placebo patches for 2 hours. The patches were applied to Dazhui (GV 14), bilateral Feishu (UB 13), and bilateral Shenshu (UB 23) points. Patients received one session per week and then underwent a 4-week follow-up. The waitlist group received no treatment during the corresponding treatment period, but would be given compensatory TJ treatment in the next 4 weeks.
The primary outcome was the change of the Total Nasal Symptom Score (TNSS) after treatment. The secondary outcomes included the changes of Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ) and rescue medication score (RMS).
After the treatment period, the total TNSS in TJ group was significantly reduced compared with baseline, but showed no statistical difference compared with placebo. Among the four domains of TNSS, the change of nasal obstruction exhibited statistical difference compared with placebo group. The total RQLQ score in TJ group was significantly reduced compared with both placebo and waitlist groups. The needs of rescue medications were not different between the two groups.
There were no serious adverse events. The common adverse events included flush, pruritus, blister, and pigmentation, occurring in 17, 23, 3, and 36 person-times among TJ group, and 3, 7, 1, and 4 person-times among placebo group, respectively. These adverse events were generally tolerated and disappeared quickly after removing the patches.
The authors (from the Hong Kong Chinese Medicine Clinical Study Centre, School of Chinese Medicine, Hong Kong Baptist University) concluded that this randomized, single-blinded, controlled trial served primary evidence of the efficacy and safety of TJ therapy on AR in Hong Kong. This pilot study provided a fundamental TJ protocol for future research. Through adjusting treatment timing, frequency, retention time, and even body response settings, it has the potential to develop into an optimal therapeutic method for future application.
The authors of this poorly written paper seem to ignore their own findings by concluding as they do. The fact is that the primary endpoint of this trial failed to show a significant difference between TJ and placebo. Moreover, TJ does have considerable adverse effects. Therefore, this study fails to demonstrate both the effectiveness and the safety of TJ as a treatment of AR.
I often hesitate whether or not to discuss the plethora such frightfully incompetent research. The reason I sometimes do it is to alert the public to the fact that so much utter rubbish is published by incompetent researchers in trashy (but Medline-listed) journals, passed by incompetent ethics committees, supported by naïve funding agencies, accepted by reviewers and editors who evidently do not do their job properly. Do all these people have forgotten that they have a responsibility towards the public?
It is time to stop this nonsense!
It gives a bad name to science, misleads the public and inhibits progress.
I have become used to lamentably poor research in the realm of SCAM, particularly homeopathy. Thus, there is little that can amaze me these days; at least this is what I had thought. But this paper is an exception. The new trial is entitled ‘ETHICAL CLINICAL TRIAL OF LESSER KNOWN HOMEOPATHIC REMEDIES IN INFERTILITY IN FEMALES’, and it is truly outstanding. Here is the abstract:
Background & Objective: Homoeopathy with time honoured results, has a great number of cured cases of infertility, but without much evidence. So, it is imperative to show scientifically the scope of homoeopathy in treating infertility cases. Materials and Methodology: 7 lesser known medicines (Alteris farinosa, Janosia Ashoka, Viburnum opulus, Euphonium, Ustilago, Bacillus sycocuss, Bacillus morgan) were prescribed to the sample size (n=23), at the project site O.P.D/I.P.D. of Homoeopathy university, Saipura, Jaipur and Dr Madan Pratap Khunteta Homoeopathic Medical College, Hospital & Research Centre, Station Road, Jaipur & its extension O.P.D.’s. for study within 12 months. Result-In the present study 7 (30.43%) patients were prescribed Janosia Ashoka amongst whom 2(28.57%) showed marked improvement, while 5(71.43%) remained in the state of status quo. Conclusion- Study has shown encouraging and effective treatment in infertility in females.
It does not tell us much; therefore, let me copy several crucial passages from the paper itself:
Objectives of the study-
- To study the efficacy of homoeopathic medicines in the treatment of infertility in females.
- To enhance the knowledge of materia medica in cases of infertility in females.
Material and Methodology-
The study was conducted at O.P.D./I.P.D.of Homoeopathy University, Saipura, Sanganer and Dr M.P.K. Homoeopathic Medical College &Research Centre, Station Road, Jaipur from 2010 to 2013 for a total period of 3 Years. A sample size of n=23 and 7 lesser known remedies were selected for the studies.
Inferences- Based on clinical symptoms and pathological investigations. It was inferred that out of 23 patients taken for study, 2 (8.69%) patients showed marked improvement, while 21 (91.31%) patients remained in the state of status quo.
No, I am not kidding you. There is no further relevant information about the trial methodology nor about the results. Therefore, I feel unable to even criticise this study; it is even too awful for a critique.
And all this could be quite funny – except, of course, some nutter will undoubtedly use this paper for claiming that there is evidence for homeopathy to efficiently treat female infertility.
You have to be a homeopath to call this an ethical trial!
You might remember my post from last October:
On Twitter and elsewhere, homeopaths have been celebrating: FINALLY A PROOF OF HOMEOPATHY HAS BEEN PUBLISHED IN A TOP SCIENCE JOURNAL!!!
Here is just one example:
#homeopathy under threat because of lack of peer reviewed studies in respectable journals? Think again. Study published in the most prestigious journal Nature shows efficacy of rhus tox in pain control in rats.
But what exactly does this study show (btw, it was not published in ‘Nature’)?
The authors of the paper in question evaluated antinociceptive efficacy of Rhus Tox in the neuropathic pain and delineated its underlying mechanism. Initially, in-vitro assay using LPS-mediated ROS-induced U-87 glioblastoma cells was performed to study the effect of Rhus Tox on reactive oxygen species (ROS), anti-oxidant status and cytokine profile. Rhus Tox decreased oxidative stress and cytokine release with restoration of anti-oxidant systems. Chronic treatment with Rhus Tox ultra dilutions for 14 days ameliorated neuropathic pain revealed as inhibition of cold, warm and mechanical allodynia along with improved motor nerve conduction velocity (MNCV) in constricted nerve. Rhus Tox decreased the oxidative and nitrosative stress by reducing malondialdehyde (MDA) and nitric oxide (NO) content, respectively along with up regulated glutathione (GSH), superoxide dismutase (SOD) and catalase activity in sciatic nerve of rats. Notably, Rhus Tox treatment caused significant reductions in the levels of tumor necrosis factor (TNF-α), interleukin-6 (IL-6) and interleukin-1β (IL-1β) as compared with CCI-control group. Protective effect of Rhus Tox against CCI-induced sciatic nerve injury in histopathology study was exhibited through maintenance of normal nerve architecture and inhibition of inflammatory changes. Overall, neuroprotective effect of Rhus Tox in CCI-induced neuropathic pain suggests the involvement of anti-oxidative and anti-inflammatory mechanisms.
END OF QUOTE
I am utterly under-whelmed by in-vitro experiments (which are prone to artefacts) and animal studies (especially those with a sample size of 8!) of homeopathy. I think they have very little relevance to the question whether homeopathy works.
But there is more, much more!
It has been pointed out that there are several oddities in this paper which are highly suspicious of scientific misconduct or fraud. It has been noted that the study used duplicated data figures that claimed to show different experimental results, inconsistently reported data and results for various treatment dilutions in the text and figures, contained suspiciously identical data points throughout a series of figures that were reported to represent different experimental results, and hinged on subjective, non-blinded data from a pain experiment involving just eight rats.
Lastly, others pointed out that even if the data is somehow accurate, the experiment is unconvincing. The fast timing differences of paw withdraw is subjective. It’s also prone to bias because the researchers were not blinded to the rats’ treatments (meaning they could have known which animals were given the control drug or the homeopathic dilution). Moreover, eight animals in each group is not a large enough number from which to draw firm conclusions, they argue.
As one consequence of these suspicions, the journal has recently added the following footnote to the publication:
10/1/2018 Editors’ Note: Readers are alerted that the conclusions of this paper are subject to criticisms that are being considered by the editors. Appropriate editorial action will be taken once this matter is resolved.
Well, it took a while, but now there is some news about this case:
‘Science Reports’, just published a retraction note:
Retraction of: Scientific Reports https://doi.org/10.1038/s41598-018-31971-9, published online 10 September 2018
Following publication, the journal received criticisms regarding the rationale of this study and the plausibility of its central conclusions. Expert advice was obtained, and the following issues were determined to undermine confidence in the reliability of the study.
The in vitro model does not support the main conclusion of the paper that Rhus Tox reduces pain. The qualitative and quantitative composition of the Rhus Tox extract is unknown. Figures 1G and 1H are duplicates; and figures 1I and 1J are duplicates. The majority of experimental points reported in figure 3 panel A are duplicated in figure 3 panel B. The collection, description, analysis and presentation of the behavioural data in Figure 3 is inadequate and cannot be relied upon.
As a result the editors are retracting the Article. The authors do not agree with the retraction.
Does that mean the suspect paper has been declared fraudulent?
I think so.
In any case: another victory of reason over unreason!
“Eating elderberries can help minimise influenza symptoms.” This statement comes from a press release by the University of Sydney. As it turned out, the announcement was not just erroneous but it also had concealed that the in-vitro study that formed the basis for the press-release was part-funded by the very company, Pharmacare, which sells elderberry-based flu remedies.
“This is an appalling misrepresentation of this Pharmacare-funded in-vitro study,” said associate professor Ken Harvey, president of Friends of Science in Medicine. “It was inappropriate and misleading to imply from this study that an extract was ‘proven to fight flu’.” A University of Sydney spokeswoman confirmed Pharmacare was shown a copy of the press release before it was published.
This is an embarrassing turn of events, no doubt. But what about elderberry (Sambucus nigra) and the flu? Is there any evidence?
A systematic review quantified the effects of elderberry supplementation. Supplementation with elderberry was found to substantially reduce upper respiratory symptoms. The quantitative synthesis of the effects yielded a large mean effect size. The authors concluded that these findings present an alternative to antibiotic misuse for upper respiratory symptoms due to viral infections, and a potentially safer alternative to prescription drugs for routine cases of the common cold and influenza.
The alternative to antibiotic misuse can only be the correct use of antibiotics. And, in the case of viral infections such as the flu, this can only be the non-use of antibiotics. My trust in this review, published in a SCAM journal of dubious repute, has instantly dropped to zero.
Perhaps a recent overview recently published in THE MEDICAL LETTER provides a more trustworthy picture:
No large randomized, controlled trials evaluating the effectiveness of elderberry for prevention or treatment of influenza have been conducted to date. Elderberry appears to have some activity against influenza virus strains in vitro. In two small studies (conducted outside the US), adults with influenza A or B virus infection taking elderberry extract reported a shorter duration of symptoms compared to those taking placebo. Consuming uncooked blue or black elderberries can cause nausea and vomiting. The rest of the plant (bark, stems, leaves, and root) contains sambunigrin, which can release cyanide. No data are available on the safety of elderberry use during pregnancy or while breastfeeding. CONCLUSION — Prompt treatment with an antiviral drug such as oseltamivir (Tamiflu, and generics) has been shown to be effective in large randomized, controlled trials in reducing the duration of influenza symptoms, and it may reduce the risk of influenza-related complications. There is no acceptable evidence to date that elderberry is effective for prevention or treatment of influenza and its safety is unclear.
Any take-home messages?
- Elderberry supplements are not of proven effectiveness against the flu.
- The press officers at universities should be more cautious when writing press-releases.
- They should involve the scientists and avoid the sponsors of the research.
- In-vitro studies can never tell us anything about clinical effectiveness.
- SCAM-journals’ articles must be taken with a pinch of salt.
- Consumers are being misled left, right and centre.
Radix Salviae Miltiorrhizae (Danshen) is a herbal remedy that is part of many TCM herbal mixtures. Allegedly, Danshen has been used in clinical practice for over 2000 years.
But is it effective?
The aim of this systematic review was to evaluate the current available evidence of Danshen for the treatment of cancer. English and Chinese electronic databases were searched from PubMed, the Cochrane Library, EMBASE, and the China National Knowledge Infrastructure (CNKI), VIP database, Wanfang database until September 2018. The methodological quality of the included studies was evaluated by using the method of Cochrane system.
Thirteen RCTs with 1045 participants were identified. The studies investigated the lung cancer (n = 5), leukemia (n = 3), liver cancer (n = 3), breast or colon cancer (n = 1), and gastric cancer (n = 1). A total of 83 traditional Chinese medicines were used in all prescriptions and there were three different dosage forms. The meta-analysis suggested that Danshen formulae had a significant effect on RR (response rate) (OR 2.38, 95% CI 1.66-3.42), 1-year survival (OR 1.70 95% CI 1.22-2.36), 3-year survival (OR 2.78, 95% CI 1.62-4.78), and 5-year survival (OR 8.45, 95% CI 2.53-28.27).
The authors concluded that the current research results showed that Danshen formulae combined with chemotherapy for cancer treatment was better than conventional drug treatment plan alone.
I am getting a little tired of discussing systematic reviews of so-called alternative medicine (SCAM) that are little more than promotion, free of good science. But, because such articles do seriously endanger the life of many patients, I do nevertheless succumb occasionally. So here are a few points to explain why the conclusions of the Chinese authors are nonsense:
- Even though the authors claim the trials included in their review were of high quality, most were, in fact, flimsy.
- The trials used no less than 83 different herbal mixtures of dubious quality containing Danshen. It is therefore not possible to define which mixture worked and which did not.
- There is no detailed discussion of the adverse effects and no mention of possible herb-drug interactions.
- There seemed to be a sizable publication bias hidden in the data.
- All the eligible studies were conducted in China, and we know that such trials are unreliable to say the least.
- Only four articles were published in English which means those of us who cannot read Chinese are unable to check the correctness of the data extraction of the review authors.
I know it sounds terribly chauvinistic, but I do truly believe that we should simply ignore Chinese articles, if they have defects that set our alarm bells ringing – if not, we are likely to do a significant disservice to healthcare and progress.
Chiropractic spinal manipulative therapy (CSMT) for migraine?
There is no good evidence that it works!
On the contrary, there is good evidence that it does NOT work!
A recent and rigorous study (conducted by chiropractors!) tested the efficacy of chiropractic CSMT for migraine. It was designed as a three-armed, single-blinded, placebo -controlled RCT of 17 months duration including 104 migraineurs with at least one migraine attack per month. Active treatment consisted of CSMT (group 1) and the placebo was a sham push manoeuvre of the lateral edge of the scapula and/or the gluteal region (group 2). The control group continued their usual pharmacological management (group 3). The results show that migraine days were significantly reduced within all three groups from baseline to post-treatment. The effect continued in the CSMT and placebo groups at all follow-up time points (groups 1 and 2), whereas the control group (group 3) returned to baseline. The reduction in migraine days was not significantly different between the groups. Migraine duration and headache index were reduced significantly more in the CSMT than in group 3 towards the end of follow-up. Adverse events were few, mild and transient. Blinding was sustained throughout the RCT. The authors concluded that the effect of CSMT observed in our study is probably due to a placebo response.
One can understand that, for chiropractors, this finding is upsetting. After all, they earn a good part of their living by treating migraineurs. They don’t want to lose patients and, at the same time, they need to claim to practise evidence-based medicine.
What is the way out of this dilemma?
They only need to publish a review in which they dilute the irritatingly negative result of the above trial by including all previous low-quality trials with false-positive results and thus generate a new overall finding that alleges CSMT to be evidence-based.
This new systematic review of randomized clinical trials (RCTs) evaluated the evidence regarding spinal manipulation as an alternative or integrative therapy in reducing migraine pain and disability.
The searches identified 6 RCTs eligible for meta-analysis. Intervention duration ranged from 2 to 6 months; outcomes included measures of migraine days (primary outcome), migraine pain/intensity, and migraine disability. Methodological quality varied across the studies. The results showed that spinal manipulation reduced migraine days with an overall small effect size as well as migraine pain/intensity.
The authors concluded that spinal manipulation may be an effective therapeutic technique to reduce migraine days and pain/intensity. However, given the limitations to studies included in this meta-analysis, we consider these results to be preliminary. Methodologically rigorous, large-scale RCTs are warranted to better inform the evidence base for spinal manipulation as a treatment for migraine.
Bob’s your uncle!
Perhaps not perfect, but at least the chiropractic profession can now continue to claim they practice something akin to evidence-based medicine, while happily cashing in on selling their unproven treatments to migraineurs!
But that’s not very fair; research is not for promotion, research is for finding the truth; this white-wash is not in the best interest of patients! I hear you say.
Who cares about fairness, truth or conflicts of interest?
Christine Goertz, one of the review-authors, has received funding from the NCMIC Foundation and served as the Director of the Inter‐Institutional Network for Chiropractic Research (IINCR). Peter M. Wayne, another author, has received funding from the NCMIC Foundation and served as the co‐Director of the Inter‐Institutional Network for Chiropractic Research (IINCR)
And who the Dickens are the NCMIC and the IINCR?
At NCMIC, they believe that supporting the chiropractic profession, including chiropractic research programs and projects, is an important part of our heritage. They also offer business training and malpractice risk management seminars and resources to D.C.s as a complement to the education provided by the chiropractic colleges.
The IINCR is a collaborative effort between PCCR, Yale Center for Medical Informatics and the Osher Center for Integrative Medicine at Brigham and Women’s Hospital and Harvard Medical School. They aim at creating a chiropractic research portfolio that’s truly translational. Vice Chancellor for Research and Health Policy at Palmer College of Chiropractic Christine Goertz, DC, PhD (PCCR) is the network director. Peter Wayne, PhD (Osher Center for Integrative Medicine at Brigham and Women’s Hospital and Harvard Medical School) will join Anthony J. Lisi, DC (Yale Center for Medical Informatics and VA Connecticut Healthcare System) as a co-director. These investigators will form a robust foundation to advance chiropractic science, practice and policy. “Our collective efforts provide an unprecedented opportunity to conduct clinical and basic research that advances chiropractic research and evidence-based clinical practice, ultimately benefiting the patients we serve,” said Christine Goertz.
Really: benefiting the patients?
You could have fooled me!
The aim of this new systematic review was to evaluate the controlled trials of homeopathy in bronchial asthma. Relevant trials published between Jan 1, 1981, and Dec 31, 2016, were considered. Substantive research articles, conference proceedings, and master and doctoral theses were eligible. Methodology was assessed by Jadad’s scoring, internal validity by the Coch-rane tool, model validity by Mathie’s criteria, and quality of individualization by Saha’s criteria.
Sixteen trials were eligible. The majority were positive, especially those testing complex formulations. Methodological quality was diverse; 8 trials had “high” risk of bias. Model validity and individualization quality were compromised. Due to both qualitative and quantitative inadequacies, proofs supporting individualized homeopathy remained inconclusive. The trials were positive (evidence level A), but inconsistent, and suffered from methodological heterogeneity, “high” to “uncertain” risk of bias, incomplete study reporting, inadequacy of independent replications, and small sample sizes.
The authors of this review come from:
- the Department of Homeopathy, District Joint Hospital, Government of Bihar, Darbhanga, India;
- the Department of Organon of Medicine and Homoeopathic Philosophy, Sri Sai Nath Postgraduate Institute of Homoeopathy, Allahabad, India;
- the Homoeopathy University Jaipur, Jaipur, India;
- the Central Council of Homeopathy, Hooghly,
- the Central Council of Homeopathy, Howrah, India
They state that they have no conflicts of interest.
The review is puzzling on so many accounts that I had to read it several times to understand it. Here are just some of its many oddities:
- According to its authors, the review adhered to the PRISMA-P guideline; as a co-author of this guideline, I can confirm that this is incorrect.
- The authors claim to have included all ‘controlled trials (randomized, non-randomized, or observational) of any form of homeopathy in patients suffering from persistent and chronic bronchial asthma’. In fact, they also included uncontrolled studies (16 controlled trials and 12 uncontrolled observational studies, to be precise).
- The authors included papers published between Jan 1, 1981, and Dec 31, 2016. It is unacceptable, in my view, to limit a systematic review in this way. It also means that the review was seriously out of date already on the day it was published.
- The authors tell us that they applied no language restrictions. Yet they do not inform us how they handled papers in foreign languages.
- Studies of homeopathy as a stand alone therapy were included together with studies of homeopathy as an adjunct. Yet the authors fail to point out which studies belonged to which category.
- Several of the included studies are not of homeopathy but of isopathy.
- The authors fail to detail their results and instead refer to an ‘online results table’ which I cannot access even though I have the on-line paper.
- Instead, they report that 28 studies were included and ‘thus, the level of evidence was graded as A.’
- No direction of outcome was provided in the results section. All we do learn from the paper’s discussion section is that ‘the majority of the studies were positive, and the level of evidence could be graded as A (strong scientific evidence)’.
- Despite the high risk of bias in most of the included studies, the authors suggest a ‘definite role of homeopathy beyond placebo in the treatment of bronchial asthma’.
- The current Cochrane review (also authored by a pro-homeopathy team) concluded that there is not enough evidence to reliably assess the possible role of homeopathy in asthma. Yet the authors of this new review do not even attempt to explain the contradiction.
The purpose of this recently published survey was to obtain the demographic profile and educational background of chiropractors with paediatric patients on a multinational scale.
A multinational online cross-sectional demographic survey was conducted over a 15-day period in July 2010. The survey was electronically administered via chiropractic associations in 17 countries, using SurveyMonkey for data acquisition, transfer, and descriptive analysis.
The response rate was 10.1%, and 1498 responses were received from 17 countries on 6 continents. Of these, 90.4% accepted paediatric cases. The average practitioner was male (61.1%) and 41.4 years old, had 13.6 years in practice, and saw 107 patient visits per week. Regarding educational background, 63.4% had a bachelor’s degree or higher in addition to their chiropractic qualification, and 18.4% had a postgraduate certificate or higher in paediatric chiropractic.
The authors from the Anglo-European College of Chiropractic (AECC), Bournemouth University, United Kingdom, drew the following conclusion: this is the first study about chiropractors who treat children from the United Arab Emirates, Peru, Japan, South Africa, and Spain. Although the response rate was low, the results of this multinational survey suggest that pediatric chiropractic care may be a common component of usual chiropractic practice on a multinational level for these respondents.
A survey with a response rate of 10%?
An investigation published 9 years after it has been conducted?
Who at the AECC is responsible for controlling the quality of the research output?
Or is this paper perhaps an attempt to get the AECC into the ‘Guinness Book of Records’ for outstanding research incompetence?
But let’s just for a minute pretend that this paper is of acceptable quality. If the finding that ~90% of chiropractors tread kids is approximately correct, one has to be very concerned indeed.
I am not aware of any good evidence that chiropractic care is effective for paediatric conditions. On the contrary, it can do quite a bit of direct harm! To this, we sadly also have to add the indirect harm many chiropractors cause, for instance, by advising parents against vaccinating their kids.
This clearly begs the question: is it not time to stop these charlatans?
What do you think?