| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 342 |
41.6%
|
| 2 | Somewhat difficult | 303 |
36.9%
|
| 3 | Not difficult at all | 158 |
19.2%
|
| 4 | (DK) | 19 |
2.3%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 178 |