| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 247 |
28.7%
|
| 2 | Somewhat difficult | 333 |
38.6%
|
| 3 | Not difficult at all | 274 |
31.8%
|
| 4 | (DK) | 5 |
0.6%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 145 |