| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 54 |
5.6%
|
| 2 | Somewhat difficult | 219 |
22.6%
|
| 3 | Not difficult at all | 695 |
71.6%
|
| 4 | (DK) | 2 |
0.2%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 29 |