From: Modification by hemochromatosis gene polymorphisms of the association between traffic-related air pollution and cognition in older men: a cohort study
Odds ratioa (95% confidence interval)
p-value for interaction
HFE C282Y
   Wild Type
1.37 (1.08, 1.73)
0.20
   Variant
0.91 (0.50, 1.64)
HFE H63D
1.24 (0.97, 1.59)
0.22
1.74 (1.06, 2.87)