“Everyone subject to the initial risk ÷ everyone who was diagnosed = risk ratio.”
You are avoiding answering the simple question, what initial risk that you keep referring to?
you are implying that there is an initial risk, which is the basis to you questioning the results.
Are you referring to the genetic factor. If yes, if there is a factor (or variable) why is that not sufficient to be the cause of autism that you need to blame the MMR vaccine?
Also, you keep on differentiating between regular autism and MMR autism, what is the difference and what is the source of this difference? Does the study differentiate between the two types of autisms?
lastly, you claim that regular autism affects everyone (all groups), which would mean that on top of the regular autism, there is the MMR caused autism.
if that were the case, the MMR group would have a significant increase in autism, as they have the ‘regular autism’ on top of the ‘MMR caused’ autism. While the group without the vaccines would be significantly lower, as they only have the ‘regular autism’.
The study is only deceptive after you have established your own facts.