| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never tried using electronic cigarette | 2007 |
75.1%
|
| 2 | 7 years old or younger | 38 |
1.4%
|
| 3 | 8 or 9 years old | 28 |
1%
|
| 4 | 10 or 11 years old | 59 |
2.2%
|
| 5 | 12 or 13 years old | 200 |
7.5%
|
| 6 | 14 or 15 years old | 247 |
9.2%
|
| 7 | 16 years old or older | 95 |
3.6%
|