|Part 3: Association Study|
You're correct. The Odds ratio is 3.09:
Odds ratio = ad/bc
Odds ratio = (21 x 40) / (17 x 16) = 3.09
95% Confidence Interval = 1.30 –7.32
In this instance the confidence interval is above 1. Therefore, the T allele is a significant risk factor for AD.
Good job! You have discovered a gene on chromosome 6 that seems to be linked to Alzheimer disease.
Now, Click here to read more information on SOD2 to support your results.