jay23,
Ratio Calculation Crash Course
Purpose: The single and only purpose of calculating a ratio here, is to measure the level of risk for a potential underlying cause.
Method:
Step 1) Determine the factor that exposes them to the risk.
Step 2) Count EVERYONE who has that factor.
Step 3) Count EVERYONE within step #2 who was actually affected.
Step 4) Divide step 2 by step 3.
For MMR group:
1) Recieving MMR
2) 86,063
3) 792
4) 1:108
___
Non-MMR Group
1) Being human with genes.
2) 95,000
3) can’t know who would’ve been triggered by genetics anyways.
4) can’t calculate without #3.
___
The study messed up at Step #1. It counts the Non-MMR group based on a criteria that doesn’t play any role whatsoever in their risk.
1) lacking MMR – bad – this doesn’t expose them to Autism
2) 7,735 – bad – see step 1
3) 68 – bad – see step 1
4) 1:113 – bad – see step 1
So the number you see is a worthless number. It shows nothing about the level of risk those children are exposed to. When you take their real risk factor into account (as above) and make a legitimate ratio, it can indeed be 1:500.