| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1815 |
78.7%
|
| 2 | One or two puffs | 156 |
6.8%
|
| 3 | Only one cigarette | 65 |
2.8%
|
| 4 | 2 to 5 cigarettes per day | 96 |
4.2%
|
| 5 | 6 to 15 cigarettes | 42 |
1.8%
|
| 6 | 16 to 25 cigarettes | 27 |
1.2%
|
| 7 | 26 to 99 cigarettes | 27 |
1.2%
|
| 8 | More than 100 cigarettes | 77 |
3.3%
|
| Sysmiss | 8 |