| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 33 |
17.4%
|
| 2 | Moderately difficult | 70 |
36.8%
|
| 3 | Somewhat difficult | 69 |
36.3%
|
| 4 | Not difficult at all | 18 |
9.5%
|
| Sysmiss | 410 |