| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 153 |
16.6%
|
| 2 | Somewhat difficult | 293 |
31.9%
|
| 3 | Not difficult at all | 464 |
50.5%
|
| 4 | (DK) | 9 |
1%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 82 |