| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 889 |
29.6%
|
| 2 | 7 years old or younger | 109 |
3.6%
|
| 3 | 8 or 9 years old | 233 |
7.8%
|
| 4 | 10 or 11 years old | 591 |
19.7%
|
| 5 | 12 or 13 years old | 955 |
31.8%
|
| 6 | 14 or 15 years old | 220 |
7.3%
|
| 7 | 16 years old or older | 6 |
0.2%
|
| Sysmiss | 147 |