| Value | Category |
|---|---|
| 1 | I have never smoked cigarettes |
| 2 | Today |
| 3 | Not today, but sometime in the last week |
| 4 | Not today, but sometime in the past month |
| 5 | Not today, but sometime in the past 6 months |
| 6 | I have not smoked in the past 6 months, but sometime in the past 12 months |
| 7 | 1-4 years ago |
| 8 | 5 or more years ago |