| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked a cigarette | 1774 |
76.1%
|
| 2 | None | 367 |
15.8%
|
| 3 | Some | 142 |
6.1%
|
| 4 | More than half | 15 |
0.6%
|
| 5 | All or nearly all | 32 |
1.4%
|
| Sysmiss | 4 |