| Value |
Category |
| 1 |
1 to 5 |
| 2 |
6 to 10 |
| 3 |
less than a pack |
| 4 |
one pack |
| 5 |
one to two packs |
| 6 |
two packs |
| 7 |
more than 2 packs |
| 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.