| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 256 |
28%
|
| 2 | Somewhat difficult | 345 |
37.8%
|
| 3 | Not difficult at all | 295 |
32.3%
|
| 4 | (DK) | 10 |
1.1%
|
| 5 | (ref) | 7 |
0.8%
|
| Sysmiss | 90 |