maybe the type of people that go along with the homeopathic novac etc etc are not the type of people that give birth to autistic kids.
i find it hard to see how they can control for factors like that, in studies like this. another example being longevity and alcohol intake - where the type of people who intake more alcohol are more social.
how can you control for another more important factor, that you aren't aware of?
the researchers as you put it: "didn't know what they didn't know".
i find it hard to see how they can control for factors like that, in studies like this. another example being longevity and alcohol intake - where the type of people who intake more alcohol are more social.
how can you control for another more important factor, that you aren't aware of?
the researchers as you put it: "didn't know what they didn't know".