| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 230 |
9.6%
|
| 2 | Easy | 388 |
16.2%
|
| 3 | Difficult | 532 |
22.2%
|
| 4 | Very Difficult | 574 |
23.9%
|
| 7 | Not applicable | 674 |
28.1%
|
| 8 | Refused | 1 |
0%
|
| 9 | Don't know | 1 |
0%
|