| Value | Category |
|---|---|
| 1 | I have never smoked / I do not smoke |
| 2 | At home |
| 3 | At social events |
| 4 | At friends' houses |
| 5 | At school or school territory during classes and/or breaks |
| 6 | Outside school territory during classes and/or breaks |
| 7 | In public places, such as on the street, at café, in park |
| 8 | Other |
| Sysmiss |