| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 237 |
24.6%
|
| 2 | Somewhat difficult | 423 |
43.9%
|
| 3 | Not difficult at all | 300 |
31.1%
|
| 4 | (DK) | 1 |
0.1%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 41 |