| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3514 |
85%
|
| 2 | I have not stopped smoking | 53 |
1.3%
|
| 3 | It was very difficult | 23 |
0.6%
|
| 4 | It was rather difficult | 58 |
1.4%
|
| 5 | It was rather easy | 154 |
3.7%
|
| 6 | It was very easy | 334 |
8.1%
|
| Sysmiss | 10 |