| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 133 |
13.6%
|
| 2 | Somewhat difficult | 228 |
23.3%
|
| 3 | Not difficult at all | 613 |
62.6%
|
| 4 | (DK) | 5 |
0.5%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 25 |