Keej123,
Sorry for being late in the discussion.
Not sure what you are trying to uncover.
The actual study actually splices the data in all directions, showing no change with MMR vaccine.
If there are a group of people that have a different variable (such a genetics) which would result in the MMR vaccine together with variable have some sort of synergistic effect and cause the child to develop autism, if that were the case, the group receiving the MMR vaccine would have a higher percentage of cases of autism.
Since the variable is evenly spread across both groups, if it was the case like you suggested that the variable would cause the MMR shot to cause autism, the group receiving the MMR vaccine would have had a higher percentage of autism cases, as this is the only group that has the variable together with the MMR vaccine.
Now, this is all assuming that such a variable exists, however, this is just made up hypothetical stuff to satisfy an unsubstantiated agenda that the MMR vaccine plays a roll and is a cause of autism.
As of now, the data suggests that genetics are what is causing autism.
PubMed 24794370
PubMed 21844053
Parents with children that were diagnosed with Autism are less likely to vaccinate their other children vs other parents, yet the risk of their other children developing autism is significant.