| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 17 |
27.4%
|
| 2 | Moderately difficult | 29 |
46.8%
|
| 3 | Somewhat difficult | 13 |
21%
|
| 4 | Not difficult at all | 3 |
4.8%
|
| Sysmiss | 316 |