| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 350 |
37.1%
|
| 2 | Somewhat difficult | 332 |
35.2%
|
| 3 | Not difficult at all | 256 |
27.1%
|
| 4 | (DK) | 3 |
0.3%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 58 |