Regression of γ-GT and smoking, by alcohol consumption category.

aAll models adjusted for age, BMI, and alcohol consumption category; 'fully adjusted' models additionally adjusted for nationality, occupational group, prevalent diabetes, prevalent ischemic heart disease, prevalent hypertension.
bP-values refer to a 5 degrees of freedom Wald test for the significance of an interaction term of the smoking trend variable with the alcohol drinking category.
Results of trend modelsa (median smoking intensity of 0, 10, 20, and 30 cigarettes/day assigned to individuals belonging to the different smoking intensity classes; former smokers excluded) estimating the effects of smoking on serum γ-GT levels nested in alcohol consumption intensity strata.