| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 45 |
37.2%
|
| 2 | Moderately difficult | 45 |
37.2%
|
| 3 | Somewhat difficult | 22 |
18.2%
|
| 4 | Not difficult at all | 9 |
7.4%
|
| Sysmiss | 488 |