From today’s CBS news, ‘Risk of chiropractic treatment’:
Note that at the end of the article the following study is cited in support of there being “no link between chiropractic treatment and stroke”:
Risk of Vertebrobasilar Stroke and Chiropractic Care: Results of a Population-Based Case-Control and Case-Crossover Study
http://spinejournal.com/pt/re/spine...ovft&results=1&count=10&searchid=1&nav=search
However, according to this letter from Sharon Mathiason, a mother whose daughter died following chiropractic neck manipulation, it appears that the study’s lead author, David Cassidy (DC), was discredited as a researcher some time ago:
For those interested, a new critical evaluation of chiropractic by Professor Edzard Ernst has just been published in the Journal of Pain and Symptom Management. Here’s part of the abstract:
Britt Harwe hasn't eaten a meal in 15 years. She survives on nutritional drinks poured directly into her stomach through a feeding tube.
"If I try to swallow, it goes into my lungs, I aspirate," said Britt.
She says it's the result of suffering a stroke during a visit to her chiropractor.
"I slumped over to the left and he helped me straighten out and I couldn't really focus. I couldn't talk," said Britt. The chiropractor had just finished adjusting her neck.
More…
http://cbs3.com:80/health/Risk.of.Chiropractic.2.661491.html
(Don’t forget to watch the accompanying 2-minute video)
Note that at the end of the article the following study is cited in support of there being “no link between chiropractic treatment and stroke”:
Risk of Vertebrobasilar Stroke and Chiropractic Care: Results of a Population-Based Case-Control and Case-Crossover Study
http://spinejournal.com/pt/re/spine...ovft&results=1&count=10&searchid=1&nav=search
However, according to this letter from Sharon Mathiason, a mother whose daughter died following chiropractic neck manipulation, it appears that the study’s lead author, David Cassidy (DC), was discredited as a researcher some time ago:
This new "study" itself is a review of billing records. No patient charts or tests were examined. There was no new scientific data. The authors took 819 strokes and then used billing records to see who had seen a doctor in the past year and who had seen a chiropractor. Considering that billing payments were very limited for chiropractors in Ontario and now thank God have been completely eliminated, this is a very poor record of the actual number of visits to a chiropractor. Did the scientists not realize this simple statistical fact?
Of course, the strokes caused by the chiropractors happened in their offices while none happened in the office of the doctors. Where did they tell us that? According to the logic of this study, if my daughter Laurie or anyone else saw your medical doctor in January and then had a stroke in December after having a neck manipulation, it did not count against the chiropractor. Almost everyone has seen their doctor within a year. You would get the same result if she had stopped at McDonald’s to buy a hamburger and then went to the chiropractor.
The Globe and Mail [a newspaper in which the study was recently featured] is also negligent in not identifying the principal author, David Cassidy, as a chiropractor, one who has been sued in Saskatchewan, in 1999, by his research assistant for falsifying data, and one whose work is stated in the New England Journal of Medicine as "all of the study’s authors conclusions are completely invalidated by their methods".
David Cassidy, before he was dismissed from the University of Saskatchewan,was called as an "expert" witness by the Chiropractic Association of Saskatchewan (CAS) at my daughter’s inquest.
In the Globe and Mail article co-author David Cassidy is quoted "Has it ever happened that a chiropractor has caused a stroke? I can’t say it’s never happened. But if it’s happening, it’s not happening at a greater risk than when it is at a GP office". Well guess what, chiropractor David Cassidy admitted on the stand into the death of my daughter they he had manipulated the neck of a woman and caused a stroke, a very severe one called Wallenberg’s syndrome. Did he say it never happened because this poor woman also saw her doctor in the past year? I doubt if he has ever seen a patient coming out of a doctor's office having a stroke after a neck manipulation.
More…
http://www.chirowatch.com/Chiro-strokes/gm080120stroke.html
(Scroll down the link a little to locate the letter)
For those interested, a new critical evaluation of chiropractic by Professor Edzard Ernst has just been published in the Journal of Pain and Symptom Management. Here’s part of the abstract:
Chiropractic is rooted in mystical concepts. This led to an internal conflict within the chiropractic profession, which continues today.
-snip-
With the possible exception of back pain, chiropractic spinal manipulation has not been shown to be effective for any medical condition.
Manipulation is associated with frequent mild adverse effects and with serious complications of unknown incidence.
Its cost-effectiveness has not been demonstrated beyond reasonable doubt.
The concepts of chiropractic are not based on solid science and its therapeutic value has not been demonstrated beyond reasonable doubt.
More…
http://www.ncbi.nlm.nih.gov/pubmed/...ez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum