| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 36 |
17.8%
|
| 2 | Moderately difficult | 95 |
47%
|
| 3 | Somewhat difficult | 52 |
25.7%
|
| 4 | Not difficult at all | 19 |
9.4%
|
| Sysmiss | 1523 |