| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 185 |
19.5%
|
| 2 | Somewhat difficult | 470 |
49.5%
|
| 3 | Not difficult at all | 277 |
29.2%
|
| 4 | (DK) | 14 |
1.5%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 51 |