| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 10 |
28.6%
|
| 2 | Moderately difficult | 11 |
31.4%
|
| 3 | Somewhat difficult | 13 |
37.1%
|
| 4 | Not difficult at all | 1 |
2.9%
|
| Sysmiss | 484 |