g*********9
发帖数: 1285 | 1 算算相关性就可以，前提是数据不能造假，
http://www.informaworld.com/smpp/content~db=all~content=a938070
这篇文章就发现一个著名加拿大学者发的文章数据有问题
http://www.google.ca/url?sa=t&source=web&cd=5&ved=0CDQQFjAE&url
The reason for the rapid rise of autism in the United States that began in
the 1990s is a mystery. Although individuals probably have a genetic
predisposition to develop autism, researchers suspect that one or more
environmental triggers are also needed. One of those triggers might be the
battery of vaccinations that young children receive. Using regression
analysis and controlling for family income and ethnicity, the relationship
between the proportion of children who received the recommended vaccines by
age 2 years and the prevalence of autism (AUT) or speech or language
impairment (SLI) in each U.S. state from 2001 and 2007 was determined. A
positive and statistically significant relationship was found: The higher
the proportion of children receiving recommended vaccinations, the higher
was the prevalence of AUT or SLI. A 1% increase in vaccination was
associated with an additional 680 children having AUT or SLI. Neither
parental behavior nor access to care affected the results, since vaccination
proportions were not significantly related (statistically) to any other
disability or to the number of pediatricians in a U.S. state. The results
suggest that although mercury has been removed from many vaccines, other
culprits may link vaccines to autism. Further study into the relationship
between vaccines and autism is warranted. |
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