Request the last empty pack of cigarettes purchased by the subject. The interviewer should answer the following questions by inspecting the pack.
Literal question
Does the empty pack given to you by the subject display the following? Domestic tax stamp
Categories
Value
Category
1
yes
2
no
8
refused to answer
9
dk
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.