| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2410 |
84.4%
|
| 2 | An ex-smoker | 242 |
8.5%
|
| 3 | An occasional smoker | 173 |
6.1%
|
| 4 | A frequent smoker | 17 |
0.6%
|
| 5 | A daily smoker | 12 |
0.4%
|
| Sysmiss | 28 |