| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 1222 |
31.8%
|
| 2 | Fairly difficult | 768 |
20%
|
| 3 | Fairly easy | 431 |
11.2%
|
| 4 | Very easy | 244 |
6.4%
|
| 5 | I don't know | 1176 |
30.6%
|
| Sysmiss | 70 |