| Value | Category | Cases | |
|---|---|---|---|
| 1 | I never smoked cigarettes. | 2163 |
46.5%
|
| 2 | I don't smoke now. | 1082 |
23.3%
|
| 3 | Very difficult. | 164 |
3.5%
|
| 4 | Relatively difficult. | 349 |
7.5%
|
| 5 | Very easy. | 459 |
9.9%
|
| 6 | Without any problem | 430 |
9.3%
|
| Sysmiss | 80 |