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Generation Rescue’s Vaccinated/Unvaccinated Study

Posted Jun 07 2010 6:02pm

Generation Rescue and other groups have been calling for an independent study of health outcomes comparing vaccinated and unvaccinated populations. They recently announced at the AutismOne conference that they had announced that they had procured funding for the project. They had been trying to get funding for this project from a settlement from a lawsuit against Airborne . The funds from that lawsuit have not been distributed yet. So if Generation Rescue has funding, it is from some other source.

That said, documents filed in Generation Rescue’s bid for the Airborne settlement money gives us a chance to see their proposed study design. Let me pull some of the highlights out for discussion.

The “purpose” of the grant is listed as:

Funding for study on vaccinated verse (sic) unvaccinated children to ensure the safely and well being of children worldwide.

They request $809,721 for the project.

Here is a segment of the statement of the problem to be addressed:

The U.S. and many other countries appear to be experiencing a silent pandemic with 1 in 5 children now suffering from learning disabilities, sensory deficits, and developmental delays. Neuro-developmental disorders such as autism, attention deficit hyperactivity disorder (ADHD), mental retardation, and cerebral palsy, are increasingly common, very costly, and cause lifelong disability. In 2003, the National Survey of Children’s Health reported that 0.5% (I in 200) children ages 6-17 had autism, 11.5% had learning disabilities, 8.8% had ADHD, and 6.3% had behavior problems. By 2007, the prevalence of autism in the U.S. had risen to 1 in 150 children (Rice et aI., 2007). There are a number of physical ailments that children with Childhood Neuro-developmental Disorders (NDs) typically manifest including: food allergies and eczema, general gastrointestinal distress, constipation and diarrhea, yeast overgrowth, immune system deregulation, sleep disturbances, and high levels of environmental toxins.

Why study vaccines? According to the proposal:

What could be causing these increases in NDs and disability among children in the US.? Hypotheses proposed to explain these increases have included changes in diet coupled with reduced physical activity and/or increased sedentary behavior, low birth weight, stress, medication use in pregnancy, infections and environmental toxins. Although it remains widely debated, certain routine childhood vaccinations have been suggested as contributing to the increase in neuro-developmental disorders. A recent examination of the vaccinating practice of other countries showed that the United States vaccinates children on average double that of all other first world countries; the U.S. uses 36 compared to 18 at other countries. In fact, the United States utilizes more vaccines than any other country in the world yet it has the worst mortality rate among children 5-years-old and under of the top 30 developed countries. Coincidently, some of the countries with the lowest vaccination rates also report the lowest rates of autism. It has been theorized the child’s body is overwhelmed by the combination of heavy metals (mercury, lead aluminum), live viruses (particular from their vaccines), and bacteria. These serve to slow or shut down normal biochemical pathways leading to NDi physical and mental manifestations.

I believe the “recent examination of the vaccinating practice” mentioned in the above paragraph refers to the pseudo-study Generation Rescue generated “AUTISM AND VACCINES AROUND THE WORLD: Vaccine Schedules, Autism Rates, and Under 5 Mortality”, which I discussed at length here . Generation Rescue’s “examination” was amazingly manipulative. For example, they compared a recent study on the autism rate in the U.S. for children born in 1994 to a French study from 1997 on children born between 1976 and 1985. Of course the rate in the US was higher than the rate in France. That doesn’t have anything to do with their current vaccine schedules.

What are Generation Rescue’s research credentials?

Research Programs: With some of the top scientists in the world, research is dedicated to finding more of the causative factors and treatment approaches for children with NDs.

Sort of vague there. I note that Generation Rescue decided not to tout their phone survey as an example of their research efforts. Given that in many cases the survey showed exactly the opposite of what Generation Rescue claimed in their cherry-picked publicity, this is understandable. It is still interesting that Generation Rescue seems to realize that the survey was not an asset.

Richard Deth, Ph.D.
Professor, Department of Pharmacology, Northeastern University, Pharmaceutical Sciences

Brian Hooker, Ph.D.
Principle Consultant
Brian Hooker Consulting

Jerry Kartzinel, M.D.
Pediatric Partners of Ponte Verde

Woody R. McGinnis, M.D.
Research Coordinator, Behavioral Nutrition

I’ll leave it to you to look these gentlemen up, but they are perhaps not what most people would call “top scientists in the world”. Their papers are not very highly cited autism. Also, Generation Rescue does not appear to be using their “top scientists” for this project. Which begs the question: what is the actual project?

I. Project’s Primary Purpose, and the Need it Addresses. The goal of this project is to test the association between vaccinations and both acute and chronic neuro-developmental disorders and the efficacy of preventive health strategies. This will be achieved by conducting a retrospective cross-sectional study comparing the incidence of chronic illnesses (i.e., asthma, obesity, and eczema), neuro-developmental disorders (i.e., autism, ADHD and learning disorders), and overall health and well-being among a random sample of vaccinated and unvaccinated children (5-18 years of age). The study will obtain information from a random sample of two populations: I) children being horne-schooled and belong to the National Horne Educational Research Institute (NHERI); and, 2) children among the 30,000 unvaccinated patients being provided health care at the Homefirst Health Services in Chicago. Data will be collected from medical charts and parental reports via website health surveys and the standardized measures including the Autism Diagnostic Questionnaire.

The project proposal is vague and very brief. But let’s consider some details presented.

There is some confusion about how many of Homefirst’s patients are actually unvaccinated. Generation Rescue states that 30,000 are unvaccinated, but this is actually the estimate for all the children at Homefirst, vaccinated and unvaccinated:

“We have a fairly large practice. We have about 30,000 or 35,000 children that we’ve taken care of over the years, and I don’t think we have a single case of autism in children delivered by us who never received vaccines,” said Dr. Mayer Eisenstein, Homefirst’s medical director who founded the practice in 1973.

For the moment, let’s take Dr. Eisenstein at his word. What possible biases are there that they should be working around? One examplewe don’t know the status of patients who have left Homefirst. Consider the parents who joined Homefirst specifically to avoid autism. After their child is diagnosed, is it conceivable that they not return to Homefirst and would find a different clinic? How do they plan to control for this? Also, one can not minimize the fact that Dr. Eisenstein has a lot riding on the reputation that he has built on the “no vaccines, no autism” slogan.

Even without this, researchers I have been in contact with have questioned how useful clinical notes such as these could be in screening, much less diagnosing, autism. From what I can see, Dr. Eisenstein’s practice does not include psychologists or other staff to test for autism, so that would not be directly included in the notes.

As an aside, the lack of autistics in his practice hasn’t stopped Dr. Eisenstein from joining the alternative treatment of autism. The Chicago Tribune discussed Dr. Eisenstein, his somewhat troubled past and his foray into treatments like Lupron in Autism doctor: Troubling record trails doctor treating autism.

One thing missing in this proposed study is actual contact with the children. “Standard measures” could mean a lot of things, but if they were planning on screening children and then testing probable cases using an ADOS and ADI-R (which one might argue would be “standard”), wouldn’t they mention that? If so, wouldn’t they mention who would perform such tests. None of the staff assigned to this study appears to be a psychologist, for example. The Staff for the project are listed as:

Project Stafjing: The Project Director will have a Masters’ degree and will be responsible foroverseeing the implementation, quality assurance and reporting of this project. Dr. A. Mawson is Professor of Pediatrics and Medicine at University of Mississippi Medical Center (UMMC), and Principal Investigator of the Mississippi Study Center for the National Children’s Study. Dr. B. Ray is President of the National Home Education Research Institute and an experienced researcher in home education. Dr. S. Buttross is Professor and Chief of the Division of Child Developmental Disorders in the Department of Pediatrics; UMMC; and Dr. W. May is Professor of Biostatistics, Department of Medicine, UMMC. The combined experience of these investigators ensures the highest standards of quality and scientific rigor.

Generation Rescue and others have often called for an “independent” research. Left unvoiced is whether “independent” means “independent of the government and pharmaceutical companies” or whether “independent” includes being free from ties to the vaccines-cause-autism groups.

Dear Dr. Crippen,

I would like to point out that Trisha Greenhalgh’s assessment of Andrew Wakefield’s paper was itself seriously flawed!

You do a disservice to Wakefield and the scientific community by perpetuating this myth of the flawed study and the paper that should have been “rejected” by The Lancet.

The paper is actually excellenta superb case study that will join the ranks of other famous case studies, such as the link between rubella infection and congenital rubella syndrome (Gregg 1941) and between exposure to thalidomide and embryopathy (McBride 1956).

Greenhalgh states that the paper set out to test a hypothesis that was unstatedof a causal relationship between exposure to MMR and autismand the design of the study was all wrong. She starts out with an incorrect assumption about the nature of the study and then continues to build on her incorrect foundational argument. Her argument may look impressive to the layman and most medical practitioners perhaps, but not to anyone who knows anything about study design, i.e. epidemiologists, and the reviewers of the paper for The Lancet, who clearly understood that the paper was not an hypothesis-testing paper but a hypothesis-generating paper. It was, in short, a case series analysis.

The paper, once understood in this light, as case series analysis, is truly remarkable, well written and brilliantly documented. It concluded by stating the hypothesis, based on parents’ reports, that the children’s’ signs and symptoms were temporally connected to MMR vaccination. Subsequent studies may not have substantiated the hypothesis; but that does not detract from or invalidate the merits of the paper as a case series and as, essentially, a hypothesis paper.

Anthony Mawson.

Dr. B. Ray is the President of NHERI, the homeschooling group involved in the research and is not a medical professional nor an epidemiologist.

Dr. Susan Buttross appears to be rather reasonable. The website for a clinic she is affiliated with has links to sites like the CDC and the AAP when discussing vaccines and autism. She worked on the Mississippi Autism Task Force, whose report can be found here . That report does not discuss vaccines one way or the other. It does discuss that toxins have been “implicated”:

To further complicate the findings, there is mounting suspicion that environmental factors play a role in many cases. A genetic predisposition may cause certain individuals to be more sensitive to environmental toxins. Specific environmental toxins have not yet been identified, however, lead, mercury, and other chemical toxins have been implicated. There has been concern that certain dietary components may be a causative factor in some cases. Viral infections including rubella, measles, and CMV (cytomegalic virus) have also been linked to ASD. Illicit drugs and alcohol used by the mother during pregnancy are also known to increase the risk of a child developing ASD.

Interviews with her can be heard here , here and here .
Mississippi Autism Task Force

Dr. W. May is, I believe, Warren May . I have no real details on what connection he may have to the autism communities and to the question of vaccines.

In the introduction I pointed out that Generation Rescue was attempting to get funding for this project from the Airborne settlement. The Ariborne suit was brought by the Center for Science in the Public Interest (CSPI). CSPI was not supportive of the Generation Rescue proposal, noting that the project was vague and the sample groups likely heavily biased and that Generation Rescue was not actually conducting the study, but was managing it, building in overhead costs that might not be warranted.

I tend to agree with CSPI that the proposed study is far from being strong enough to be very convincing, one way or the other, on the question of vaccines and autism. There are some potentially reasonable people associated with this proposal. But I would think that any active involvement by Dr. Mayer Eisenstein would seriously taint the study. Further, should Dr. Mawson still support Andrew Wakefield, given Wakefield’s multiple ethical lapses and clearly biased study design, I would think that too would cast somewhat of a pall on the study.

Can an study comparing outcomes of unvaccinated and vaccinated populations be performed? Like any study, a lot depends on how definitive the answer you want is. Prometheus at the Photon in the Darkness blog has discussed the limitations of these studies and, also how they could be done. One early example is in his post “Let’s put on a Study!” Dr. David Gorski goes into the details as well in The perils and pitfalls of doing a “vaccinated versus unvaccinated” study . I agree with his conclusions:

Still, if the government caves and decides to do such a study, it is up to us in the scientific community to make sure that it’s done by no one but the best epidemiologists, in other words, that it’s a proper study that correctly controls for confounders and can answer the question being asked, not the dubious study custom designed to have the maximal chance of a false positive result, which is of course what the anti-vaccine movement really wants.

The questions raised by a vaccinated/unvaccinated study are far to important to be handled by anything less than the best researchers with access to the best data. I fear that Generation Rescue’s plan doesn’t meet either count.

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