The first variable is 'SMOKE' that indicate if the person is a smoker or not. The second variable 'Daily' is related to the first by an If condition: If the person is a smoker then does he smoke daily or not.
How can I put these two variables in my model?
Thanks in advance,
EDIT: (1)I prefer to exploit the evident ordering from non-smoking to smoker to daily smoker. (If this will be significant in my model)
(2) Smoking is an independant variable in my model (In fact, It's a risk factor for a disease)