| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 313 |
36.2%
|
| 2 | Somewhat difficult | 273 |
31.6%
|
| 3 | Not difficult at all | 266 |
30.8%
|
| 4 | (DK) | 13 |
1.5%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 135 |