| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 73 |
3%
|
| 2 | Easy | 124 |
5.2%
|
| 3 | Difficult | 128 |
5.3%
|
| 4 | Very Difficult | 133 |
5.5%
|
| 7 | Not applicable | 1941 |
80.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|