| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 397 |
42.8%
|
| 2 | Somewhat difficult | 330 |
35.6%
|
| 3 | Not difficult at all | 188 |
20.3%
|
| 4 | (DK) | 11 |
1.2%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 73 |