| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 163 |
17.6%
|
| 2 | Somewhat difficult | 437 |
47.1%
|
| 3 | Not difficult at all | 309 |
33.3%
|
| 4 | (DK) | 16 |
1.7%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 74 |