| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1431 |
87.6%
|
| 2 | 1 to 2 puffs | 76 |
4.7%
|
| 3 | 1 cigarette | 54 |
3.3%
|
| 4 | 2 to 5 cigarettes | 31 |
1.9%
|
| 5 | 6 to 10 cigarettes | 17 |
1%
|
| 6 | 16 to 20 cigarettes | 7 |
0.4%
|
| 7 | 26 to 99 cigarettes | 4 |
0.2%
|
| 8 | 100 + cigarettes | 14 |
0.9%
|
| Sysmiss | 4 |