Autism risk in kids rises with mom’s age

[KatWrangler]

Interesting. What do you guys think?

http://www.msnbc.msn.com/id/35296409...mental_health/

A woman's chances of having a child with autism increase substantially as she ages, but the risk may be less for older dads than previously suggested, a new study analyzing more than 5 million births found.

[bobandjess99]

okay. Numbers are not my strong suit, so can someome please explain something to me. About 1 in 100 children are autistic, thatis the correct stat, right? So, how is it that the study says that a womans chances of having an autistic child are 4 in 1000??
I dont get it. If 1 in 100 children are autistic, shouldnt a persons chances of having an autistic child be...1 in 100??? I'm confused.