| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 0 |
0%
|
| 2 | I have never smoked | 4 |
2.8%
|
| 3 | It was very difficult | 12 |
8.3%
|
| 4 | It was rather difficult | 8 |
5.6%
|
| 5 | It was rather easy | 29 |
20.1%
|
| 6 | It was very easy | 91 |
63.2%
|
| Sysmiss | 2619 |