| Value | Category | Cases | |
|---|---|---|---|
| 1 | I never smoked cigarettes. | 1857 |
53.1%
|
| 2 | I don't smoke now. | 678 |
19.4%
|
| 3 | Very difficult. | 141 |
4%
|
| 4 | Difficult. | 201 |
5.7%
|
| 5 | Easy. | 259 |
7.4%
|
| 6 | Without any problem | 360 |
10.3%
|
| Sysmiss | 36 |