| Value | Category | Cases | |
|---|---|---|---|
| 1 | Easy | 632 |
73.6%
|
| 2 | Difficult | 145 |
16.9%
|
| 3 | Neither easy nor difficult | 52 |
6.1%
|
| 4 | Don't know | 1 |
0.1%
|
| 5 | Refused | 0 |
0%
|
| 6 | Data not entered | 29 |
3.4%
|
| Sysmiss | 344 |