| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 50 |
43.1%
|
| 2 | Moderately difficult | 54 |
46.6%
|
| 3 | Somewhat difficult | 12 |
10.3%
|
| 4 | Not difficult at all | 0 |
0%
|
| Sysmiss | 1206 |