From: Distributional interaction: Interpretational problems when using incidence odds ratios to assess interaction
Individuals with high-risk COX-2 genotype
Individuals without high-risk COX-2 genotype
Polyps
No Polyps
Low aspirin intake
75
25
30
70
High aspirin intake
10
90
Risk Ratio
3.0
Odds Ratio
9.0
3.9