| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 14 |
51.9%
|
| 2 | Moderately difficult | 8 |
29.6%
|
| 3 | Somewhat difficult | 4 |
14.8%
|
| 4 | Not difficult at all | 1 |
3.7%
|
| Sysmiss | 129 |