| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 81 |
8.8%
|
| 2 | Somewhat difficult | 249 |
27.1%
|
| 3 | Not difficult at all | 587 |
63.9%
|
| 4 | (DK) | 1 |
0.1%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 82 |