| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 364 |
44.6%
|
| 2 | Somewhat difficult | 317 |
38.8%
|
| 3 | Not difficult at all | 126 |
15.4%
|
| 4 | (DK) | 6 |
0.7%
|
| 5 | (ref) | 3 |
0.4%
|
| Sysmiss | 184 |