| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 82 |
9.2%
|
| 2 | Somewhat difficult | 210 |
23.5%
|
| 3 | Not difficult at all | 599 |
67.1%
|
| 4 | (DK) | 2 |
0.2%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 107 |