| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 62 |
5.2%
|
| 2 | Easy | 59 |
4.9%
|
| 3 | Difficult | 50 |
4.2%
|
| 4 | Very Difficult | 161 |
13.4%
|
| 7 | Not applicable | 867 |
72.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|