| Value | Category |
|---|---|
| 1 | I have never smoked cigarettes |
| 2 | I no longer smoke cigarettes |
| 3 | No, I have not smoked or felt like smoking first thing in the morning |
| 4 | Yes, sometimes I feel like smoking first thing in the morning |
| 5 | Yes, I always feel like smoking first thing in the morning |
| Sysmiss |