Table 3 Parameter estimates used in CD risk calculation model
ParameterNotationEstimate
Prevalence of CDK0.001
Smoking prevalences0.24
Increased CD risk for smokersg2
Sibling relative riskλS27.2
CARD15 sibling relative riskλS,CARD151.16
GRRs for CARD15 mutations
    No mutationGRR01
    1 mutationGRR12.24
    2 mutationsGRR29.25