| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 321 |
34.4%
|
| 2 | Somewhat difficult | 334 |
35.8%
|
| 3 | Not difficult at all | 276 |
29.6%
|
| 4 | (DK) | 1 |
0.1%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 90 |