| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 394 |
49.5%
|
| 2 | Somewhat difficult | 267 |
33.5%
|
| 3 | Not difficult at all | 128 |
16.1%
|
| 4 | (DK) | 6 |
0.8%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 204 |