| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 99 |
8.3%
|
| 2 | Easy | 194 |
16.2%
|
| 3 | Difficult | 113 |
9.4%
|
| 4 | Very Difficult | 73 |
6.1%
|
| 7 | Not applicable | 720 |
60%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|