| Value | Category | Cases | |
|---|---|---|---|
| 1 | I did not smoke cigarettes | 4472 |
92.7%
|
| 2 | Less than 1 cigarette per day | 227 |
4.7%
|
| 3 | 1 to 5 cigarettes/day | 92 |
1.9%
|
| 4 | 6 to 10 cigarettes per day | 14 |
0.3%
|
| 5 | 11 to 20 cigarettes per day | 6 |
0.1%
|
| 6 | More than 20 cigarettes per day | 15 |
0.3%
|
| Sysmiss | 122 |