| Value |
Category |
| 1 |
none of them smoke |
| 2 |
both of them |
| 3 |
only father |
| 4 |
only mother |
| 5 |
don't know whether any of them smoke (I Have no idea) |
| 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.
