| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 133 |
13.7%
|
| 2 | Somewhat difficult | 338 |
34.8%
|
| 3 | Not difficult at all | 496 |
51.1%
|
| 4 | (DK) | 4 |
0.4%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 29 |