| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2831 |
76.6%
|
| 2 | 1 month ago | 177 |
4.8%
|
| 3 | a few months ago | 163 |
4.4%
|
| 4 | one year | 139 |
3.8%
|
| 5 | 2 years | 72 |
1.9%
|
| 6 | more than 3 years ago | 120 |
3.2%
|
| 7 | I haven't stopped | 193 |
5.2%
|
| Sysmiss | 35 |