| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 40 |
33.9%
|
| 2 | Moderately difficult | 51 |
43.2%
|
| 3 | Somewhat difficult | 22 |
18.6%
|
| 4 | Not difficult at all | 5 |
4.2%
|
| Sysmiss | 713 |