1991 |
1990 |
1985 |
5. Do you smoke cigarettes now?
6. Do you now smoke cigarettes every day or some days?
7. Do you now smoke cigarettes some days or not at all?
5a. Do you smoke cigarettes now?
b. About how long has it been since you last smoked cigarettes fairly regularly?
5a. Do you smoke cigarette now?
b. About how long has it been since you last smoked cigarettes fairly regularly?