| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1214 |
23.8%
|
| 2 | 7 years old or younger | 711 |
13.9%
|
| 3 | 8 or 9 years old | 770 |
15.1%
|
| 4 | 10 or 11 years old | 964 |
18.9%
|
| 5 | 12 or 13 years old | 1089 |
21.3%
|
| 6 | 14 or 15 years old | 340 |
6.7%
|
| 7 | 16 years old or older | 13 |
0.3%
|
| Sysmiss | 243 |