| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 54 |
4.5%
|
| 2 | Easy | 219 |
18.3%
|
| 3 | Difficult | 167 |
13.9%
|
| 4 | Very Difficult | 232 |
19.3%
|
| 7 | Not applicable | 527 |
43.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|