| Value |
Category |
| 1 |
one cigarette/day |
| 2 |
2-5 cigarettes/day |
| 3 |
6-10 cigarettes/day |
| 4 |
11-19 cigarettes/day |
| 5 |
20 or more cigarettes/day |
| 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.
