| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 5573 |
48.6%
|
| 2 | Very difficult. | 465 |
4.1%
|
| 3 | Fairly difficult. | 407 |
3.5%
|
| 4 | Fairly easy. | 1772 |
15.5%
|
| 5 | Very easy | 3250 |
28.3%
|
| Sysmiss | 69 |