| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 427 |
51.8%
|
| 2 | Somewhat difficult | 249 |
30.2%
|
| 3 | Not difficult at all | 139 |
16.9%
|
| 4 | (DK) | 8 |
1%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 176 |