| Value |
Category |
| 1 |
I have never smoked cigarettes |
| 2 |
I did not smoke during the past year |
| 3 |
None |
| 4 |
Once |
| 5 |
Twice or more often |
| Sysmiss |
|
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.
