| Value | Category |
|---|---|
| 1 | I have never smoked cigarettes |
| 2 | I no longer smoke cigarettes |
| 3 | I smoke but never drink alcohol or use drugs |
| 4 | No, I smoke less when I drink alcohol or use drugs |
| 5 | Yes, I smoke more when I drink alcohol or use drugs |
| 6 | I smoke about the same when I drink alcohol or use drugs |
| Sysmiss |