| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1593 |
81.4%
|
| 2 | 7 years old at least | 70 |
3.6%
|
| 3 | 8 or 9 years old | 50 |
2.6%
|
| 4 | 10 or 11 years old | 46 |
2.4%
|
| 5 | 12 or 13 years old | 61 |
3.1%
|
| 6 | 14 or 15 years old | 94 |
4.8%
|
| 7 | at least 16 years old | 42 |
2.1%
|
| Sysmiss | 105 |