Shooting oneself in the foot
Thursday, December 18th, 2008I am frequently amazed at the sheer unpleasantness of so many people on the Internet. Orac’s got another live one, for example.
This is one J. B. Handley, who runs Generation Rescue, which claims to try to help autistics in some way, but mostly seems to attack the doctors and scientists who are trying to help autistics as well as everyone else. Handley was interviewed by the New York Times, but before the article came out (I’m not sure it’s out yet), he posted a personal slam at the interviewer. Orac goes into much more detail in his patented style. Read the whole thing.
Orac criticizes him for using gutter language, which Handley doesn’t think is fair, so after a couple of hostile but printable replies, he uses … the very same gutter language.
But I wanted to reply to a specific “argument” he makes. He says this:
What did this study actuall [sic] do? Well, from the study itself:
“The age at which doses of thimerosal-containing vaccines were administered was recorded, and measures of mercury exposure by 3, 4, and 6 months of age were calculated and compared with a number of measures of childhood cognitive and behavioral development covering the period from 6 to 91 months of age.”
Plain English: They compared the TIMING, and only the TIMING, of when kids got the DTP vaccine with Thimerosal, to see if the TIMING of the shots (earlier in a child’s life) was correlated with neurological disorders.
Their conclusion:
“We could find no convincing evidence that early exposure to thimerosal had any deleterious effect on neurologic or psychological outcome when given according to an accelerated schedule. This is reassuring for developing countries that receive DTP vaccines according to the Expanded Program of Immunization schedule and where multidose vials that contain the thimerosal preservative are often the only option. In the face of the current evidence from this study and the growing literature, the dangers posed by contaminated multidose vaccine vials far outweigh any potential risk posed by thimerosal.”
Plain English:
This would be the same as saying:
We looked at smokers who began smoking at 13 with those who began smoking at 21. Their lung cancer rates were the same. So, smoking doesn’t cause lung cancer.
To look at a study that ONLY looks at vaccinated kids, and within that only looks at WHEN they got their vaccines and than say this somehow helps makes the case that vaccines do not cause autism means that you are one of the stupidest people in the history of mankind.
Well, I said his comments were initially printable, not that they were polite or sensible. But to respond to his example:
Suppose we found that the lung cancer rates were the same, but the median age at which the first group developed lung cancer was 40, and the median age for the second group was 50. If all other things are about equal (like total cigarettes smoked by the time lung cancer developed), then that would indeed suggest that smoking does cause cancer. It’s that dose-response thing that Orac has mentioned on occasion. On the other hand, if we found both groups developed presbyopia at a median age of 45, then we would reasonably conclude that in fact smoking doesn’t cause presbyopia.
In the case of the Heron study Handley mentioned, if vaccines cause brain damage that causes autism, then earlier and more frequent vaccines should cause earlier and more severe autism than later and less frequent vaccines. But that hypothesis was not borne out.