| Value | Category | Cases | |
|---|---|---|---|
| 1 | I do not smoke at all | 2262 |
54.9%
|
| 2 | I have never smoked daily | 1116 |
27.1%
|
| 3 | Since age 12 or ealier | 301 |
7.3%
|
| 4 | Since age 13 | 240 |
5.8%
|
| 5 | Since age 14 | 159 |
3.9%
|
| 6 | Since age 15 | 35 |
0.9%
|
| 7 | Since age 16 | 4 |
0.1%
|
| Sysmiss | 32 |