| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 23 |
23.7%
|
| 2 | Moderately difficult | 34 |
35.1%
|
| 3 | Somewhat difficult | 30 |
30.9%
|
| 4 | Not difficult at all | 10 |
10.3%
|
| Sysmiss | 283 |