| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 282 |
8.7%
|
| 2 | Fairly difficult | 202 |
6.2%
|
| 3 | Fairly easy | 749 |
23.1%
|
| 4 | Very easy | 577 |
17.8%
|
| 5 | I don't know | 1430 |
44.1%
|
| Sysmiss | 10 |