| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 425 |
46.1%
|
| 2 | Somewhat difficult | 313 |
33.9%
|
| 3 | Not difficult at all | 178 |
19.3%
|
| 4 | (DK) | 6 |
0.7%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 78 |